diff --git a/web/modules/custom/.browserlistrc b/web/modules/custom/.browserlistrc
new file mode 100644
index 000000000..397b07ed5
--- /dev/null
+++ b/web/modules/custom/.browserlistrc
@@ -0,0 +1,6 @@
+# Browsers that we support
+
+last 2 version
+> 1%
+maintained node versions
+not dead
diff --git a/web/modules/custom/edlp_corpus/assets/dist/styles/corpus.min.css b/web/modules/custom/edlp_corpus/assets/dist/styles/corpus.min.css
index 9e7cd5c63..e13f8986e 100644
--- a/web/modules/custom/edlp_corpus/assets/dist/styles/corpus.min.css
+++ b/web/modules/custom/edlp_corpus/assets/dist/styles/corpus.min.css
@@ -1 +1 @@
-canvas#corpus-map{position:absolute;-webkit-box-sizing:border-box;box-sizing:border-box;top:0;left:0;z-index:0}canvas#corpus-map.de-activated{background-color:#f4f4f4}div.node-popup{z-index:10;position:absolute;-webkit-box-sizing:content-box;box-sizing:content-box;width:300px;min-height:30px;top:60%;left:30%;pointer-events:none}div.node-popup .inner{padding:.6em;outline:red solid 1px;background-color:#fff}div.node-popup:before{content:"";position:absolute;width:60px;height:0;border-top:1px solid red}div.node-popup[pos=bottom-right]{-webkit-transform:translateY(42px) translateX(42px);transform:translateY(42px) translateX(42px)}div.node-popup[pos=bottom-right]:before{top:-1px;left:-61px;-webkit-transform-origin:bottom right;transform-origin:bottom right;-webkit-transform:rotateZ(45deg);transform:rotateZ(45deg)}div.node-popup[pos=bottom-left]{-webkit-transform:translateX(-100%) translateY(42px) translateX(-42px);transform:translateX(-100%) translateY(42px) translateX(-42px)}div.node-popup[pos=bottom-left]:before{top:calc(100% +1px);left:100%;-webkit-transform-origin:top left;transform-origin:top left;-webkit-transform:rotateZ(-45deg);transform:rotateZ(-45deg)}div.node-popup[pos=top-left]{-webkit-transform:translateY(-100%) translateX(-100%) translateY(-42px) translateX(-42px);transform:translateY(-100%) translateX(-100%) translateY(-42px) translateX(-42px)}div.node-popup[pos=top-left]:before{bottom:0;left:100%;-webkit-transform-origin:top left;transform-origin:top left;-webkit-transform:rotateZ(45deg);transform:rotateZ(45deg)}div.node-popup[pos=top-right]{-webkit-transform:translateY(-100%) translateY(-42px) translateX(42px);transform:translateY(-100%) translateY(-42px) translateX(42px)}div.node-popup[pos=top-right]:before{top:calc(100% + 1px);left:-61px;-webkit-transform-origin:top right;transform-origin:top right;-webkit-transform:rotateZ(-45deg);transform:rotateZ(-45deg)}
\ No newline at end of file
+canvas#corpus-map{position:absolute;box-sizing:border-box;top:0;left:0;z-index:0}canvas#corpus-map.de-activated{background-color:#f4f4f4}div.node-popup{z-index:10;position:absolute;box-sizing:content-box;width:300px;min-height:30px;top:60%;left:30%;pointer-events:none}div.node-popup .inner{padding:.6em;outline:red solid 1px;background-color:#fff}div.node-popup:before{content:"";position:absolute;width:60px;height:0;border-top:1px solid red}div.node-popup[pos=bottom-right]{-webkit-transform:translateY(42px) translateX(42px);transform:translateY(42px) translateX(42px)}div.node-popup[pos=bottom-right]:before{top:-1px;left:-61px;-webkit-transform-origin:bottom right;transform-origin:bottom right;-webkit-transform:rotateZ(45deg);transform:rotateZ(45deg)}div.node-popup[pos=bottom-left]{-webkit-transform:translateX(-100%) translateY(42px) translateX(-42px);transform:translateX(-100%) translateY(42px) translateX(-42px)}div.node-popup[pos=bottom-left]:before{top:calc(100% +1px);left:100%;-webkit-transform-origin:top left;transform-origin:top left;-webkit-transform:rotateZ(-45deg);transform:rotateZ(-45deg)}div.node-popup[pos=top-left]{-webkit-transform:translateY(-100%) translateX(-100%) translateY(-42px) translateX(-42px);transform:translateY(-100%) translateX(-100%) translateY(-42px) translateX(-42px)}div.node-popup[pos=top-left]:before{bottom:0;left:100%;-webkit-transform-origin:top left;transform-origin:top left;-webkit-transform:rotateZ(45deg);transform:rotateZ(45deg)}div.node-popup[pos=top-right]{-webkit-transform:translateY(-100%) translateY(-42px) translateX(42px);transform:translateY(-100%) translateY(-42px) translateX(42px)}div.node-popup[pos=top-right]:before{top:calc(100% + 1px);left:-61px;-webkit-transform-origin:top right;transform-origin:top right;-webkit-transform:rotateZ(-45deg);transform:rotateZ(-45deg)}
\ No newline at end of file
diff --git a/web/modules/custom/gulpfile.js b/web/modules/custom/gulpfile.js
index 8b2641a97..2292213c7 100644
--- a/web/modules/custom/gulpfile.js
+++ b/web/modules/custom/gulpfile.js
@@ -33,38 +33,41 @@ function handleError(err) {
   console.log(err.toString());
 }
 
-gulp.task('scripts', function () {
-  var tasks = modules.map(function(module) {
-    return gulp.src('./'+module+'/assets/scripts/*.js')
-      .pipe(gulpif(prod, stripDebug()))
-      .pipe(gulpif(prod, jsmin()))
-      .pipe(rename({suffix: '.min'}))
-      .pipe(gulp.dest('./'+module+'/assets/dist/scripts/'));
+gulp.task('scripts', function (done) {
+  return new Promise(function(resolve, reject) {
+    modules.map(function(module) {
+      gulp.src('./'+module+'/assets/scripts/*.js')
+        .pipe(gulpif(prod, stripDebug()))
+        .pipe(gulpif(prod, jsmin()))
+        .pipe(rename({suffix: '.min'}))
+        .pipe(gulp.dest('./'+module+'/assets/dist/scripts/'));
+    });
+    resolve();
   });
-  return es.merge.apply(null, tasks);
 });
 
-gulp.task('styles', function () {
-  var tasks = modules.map(function(module) {
-    return gulp.src('./'+module+'/assets/styles/*.scss')
-      .pipe(sass().on('error', sass.logError))
-      .pipe(autoprefixer({
-          browsers: ['last 2 versions'],
-          cascade: false
-      })).on('error', handleError)
-      .pipe(gulpif(prod, cssmin()))
-      // .pipe(cssmin())
-      .pipe(rename({suffix: '.min'}))
-      .pipe(gulp.dest('./'+module+'/assets/dist/styles/'));
+gulp.task('styles', function (done) {
+  return new Promise(function(resolve, reject) {
+    modules.map(function(module) {
+      gulp.src('./'+module+'/assets/styles/*.scss')
+        .pipe(sass().on('error', sass.logError))
+        .pipe(autoprefixer({
+            cascade: false
+        })).on('error', handleError)
+        .pipe(gulpif(prod, cssmin()))
+        // .pipe(cssmin())
+        .pipe(rename({suffix: '.min'}))
+        .pipe(gulp.dest('./'+module+'/assets/dist/styles/'));
+    });
+    resolve();
   });
-  return es.merge.apply(null, tasks);
 });
 
 // default gulp task
-gulp.task('default', ['scripts', 'styles'], function() { //'bower',
+gulp.task('default', gulp.series('scripts', 'styles', done => {
   for (var i = 0; i < modules.length; i++) {
-    // gulp.watch('./assets/styles/*/*.scss', ['styles']);
-    gulp.watch('./'+modules[i]+'/assets/styles/*.scss', ['styles']);
-    gulp.watch('./'+modules[i]+'/assets/scripts/*.js', ['scripts']);
+    gulp.watch('./'+modules[i]+'/assets/styles/*.scss', gulp.series('styles'));
+    gulp.watch('./'+modules[i]+'/assets/scripts/*.js', gulp.series('scripts'));
   }
-});
+  done()
+}));
diff --git a/web/modules/custom/package-lock.json b/web/modules/custom/package-lock.json
index 5a7c07e5c..f273fcd82 100644
--- a/web/modules/custom/package-lock.json
+++ b/web/modules/custom/package-lock.json
@@ -33,6 +33,18 @@
         }
       }
     },
+    "ajv": {
+      "version": "6.10.2",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.2.tgz",
+      "integrity": "sha512-TXtUUEYHuaTEbLZWIKUr5pmBuhDLy+8KYtPYdcV8qC+pOZL+NKqYwvWSRrVXHn+ZmRRAu8vJTAznH7Oag6RVRw==",
+      "dev": true,
+      "requires": {
+        "fast-deep-equal": "^2.0.1",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
+      }
+    },
     "amdefine": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/amdefine/-/amdefine-1.0.1.tgz",
@@ -176,6 +188,15 @@
         }
       }
     },
+    "append-buffer": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/append-buffer/-/append-buffer-1.0.2.tgz",
+      "integrity": "sha1-2CIM9GYIFSXv6lBhTz3mUU36WPE=",
+      "dev": true,
+      "requires": {
+        "buffer-equal": "^1.0.0"
+      }
+    },
     "aproba": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
@@ -189,9 +210,9 @@
       "dev": true
     },
     "are-we-there-yet": {
-      "version": "1.1.4",
-      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.4.tgz",
-      "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz",
+      "integrity": "sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==",
       "dev": true,
       "requires": {
         "delegates": "^1.0.0",
@@ -236,12 +257,30 @@
       "integrity": "sha1-1kYQdP6/7HHn4VI1dhoyml3HxSA=",
       "dev": true
     },
+    "arr-filter": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/arr-filter/-/arr-filter-1.1.2.tgz",
+      "integrity": "sha1-Q/3d0JHo7xGqTEXZzcGOLf8XEe4=",
+      "dev": true,
+      "requires": {
+        "make-iterator": "^1.0.0"
+      }
+    },
     "arr-flatten": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
       "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
       "dev": true
     },
+    "arr-map": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/arr-map/-/arr-map-2.0.2.tgz",
+      "integrity": "sha1-Onc0X/wc814qkYJWAfnljy4kysQ=",
+      "dev": true,
+      "requires": {
+        "make-iterator": "^1.0.0"
+      }
+    },
     "arr-union": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/arr-union/-/arr-union-3.1.0.tgz",
@@ -266,12 +305,66 @@
       "integrity": "sha1-3wEKoSh+Fku9pvlyOwqWoexBh6E=",
       "dev": true
     },
+    "array-initial": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/array-initial/-/array-initial-1.1.0.tgz",
+      "integrity": "sha1-L6dLJnOTccOUe9enrcc74zSz15U=",
+      "dev": true,
+      "requires": {
+        "array-slice": "^1.0.0",
+        "is-number": "^4.0.0"
+      },
+      "dependencies": {
+        "is-number": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-4.0.0.tgz",
+          "integrity": "sha512-rSklcAIlf1OmFdyAqbnWTLVelsQ58uvZ66S/ZyawjWqIviTWCjg2PzVGw8WUA+nNuPTqb4wgA+NszrJ+08LlgQ==",
+          "dev": true
+        }
+      }
+    },
+    "array-last": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/array-last/-/array-last-1.3.0.tgz",
+      "integrity": "sha512-eOCut5rXlI6aCOS7Z7kCplKRKyiFQ6dHFBem4PwlwKeNFk2/XxTrhRh5T9PyaEWGy/NHTZWbY+nsZlNFJu9rYg==",
+      "dev": true,
+      "requires": {
+        "is-number": "^4.0.0"
+      },
+      "dependencies": {
+        "is-number": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-4.0.0.tgz",
+          "integrity": "sha512-rSklcAIlf1OmFdyAqbnWTLVelsQ58uvZ66S/ZyawjWqIviTWCjg2PzVGw8WUA+nNuPTqb4wgA+NszrJ+08LlgQ==",
+          "dev": true
+        }
+      }
+    },
     "array-slice": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/array-slice/-/array-slice-1.1.0.tgz",
       "integrity": "sha512-B1qMD3RBP7O8o0H2KbrXDyB0IccejMF15+87Lvlor12ONPRHP6gTjXMNkt/d3ZuOGbAe66hFmaCfECI24Ufp6w==",
       "dev": true
     },
+    "array-sort": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/array-sort/-/array-sort-1.0.0.tgz",
+      "integrity": "sha512-ihLeJkonmdiAsD7vpgN3CRcx2J2S0TiYW+IS/5zHBI7mKUq3ySvBdzzBfD236ubDBQFiiyG3SWCPc+msQ9KoYg==",
+      "dev": true,
+      "requires": {
+        "default-compare": "^1.0.0",
+        "get-value": "^2.0.6",
+        "kind-of": "^5.0.2"
+      },
+      "dependencies": {
+        "kind-of": {
+          "version": "5.1.0",
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-5.1.0.tgz",
+          "integrity": "sha512-NGEErnH6F2vUuXDh+OlbcKW7/wOcfdRHaZ7VWtqCztfHri/++YKmP51OdWeGPuqCOba6kk2OTe5d02VmTB80Pw==",
+          "dev": true
+        }
+      }
+    },
     "array-uniq": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
@@ -285,15 +378,18 @@
       "dev": true
     },
     "asn1": {
-      "version": "0.2.3",
-      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
-      "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y=",
-      "dev": true
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
+      "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
+      "dev": true,
+      "requires": {
+        "safer-buffer": "~2.1.0"
+      }
     },
     "assert-plus": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-0.2.0.tgz",
-      "integrity": "sha1-104bh+ev/A24qttwIfP+SBAasjQ=",
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
       "dev": true
     },
     "assign-symbols": {
@@ -302,6 +398,18 @@
       "integrity": "sha1-WWZ/QfrdTyDMvCu5a41Pf3jsA2c=",
       "dev": true
     },
+    "async-done": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/async-done/-/async-done-1.3.2.tgz",
+      "integrity": "sha512-uYkTP8dw2og1tu1nmza1n1CMW0qb8gWWlwqMmLb7MhBVs4BXrFziT6HXUd+/RlRA/i4H9AkofYloUbs1fwMqlw==",
+      "dev": true,
+      "requires": {
+        "end-of-stream": "^1.1.0",
+        "once": "^1.3.2",
+        "process-nextick-args": "^2.0.0",
+        "stream-exhaust": "^1.0.1"
+      }
+    },
     "async-each": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/async-each/-/async-each-1.0.1.tgz",
@@ -314,6 +422,15 @@
       "integrity": "sha1-NhIfhFwFeBct5Bmpfb6x0W7DRUI=",
       "dev": true
     },
+    "async-settle": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/async-settle/-/async-settle-1.0.0.tgz",
+      "integrity": "sha1-HQqRS7Aldb7IqPOnTlCA9yssDGs=",
+      "dev": true,
+      "requires": {
+        "async-done": "^1.2.2"
+      }
+    },
     "asynckit": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
@@ -327,31 +444,80 @@
       "dev": true
     },
     "autoprefixer": {
-      "version": "9.3.1",
-      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-9.3.1.tgz",
-      "integrity": "sha512-DY9gOh8z3tnCbJ13JIWaeQsoYncTGdsrgCceBaQSIL4nvdrLxgbRSBPevg2XbX7u4QCSfLheSJEEIUUSlkbx6Q==",
+      "version": "9.6.5",
+      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-9.6.5.tgz",
+      "integrity": "sha512-rGd50YV8LgwFQ2WQp4XzOTG69u1qQsXn0amww7tjqV5jJuNazgFKYEVItEBngyyvVITKOg20zr2V+9VsrXJQ2g==",
       "dev": true,
       "requires": {
-        "browserslist": "^4.3.3",
-        "caniuse-lite": "^1.0.30000898",
+        "browserslist": "^4.7.0",
+        "caniuse-lite": "^1.0.30000999",
+        "chalk": "^2.4.2",
         "normalize-range": "^0.1.2",
         "num2fraction": "^1.2.2",
-        "postcss": "^7.0.5",
-        "postcss-value-parser": "^3.3.1"
+        "postcss": "^7.0.18",
+        "postcss-value-parser": "^4.0.2"
+      },
+      "dependencies": {
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        },
+        "chalk": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          }
+        },
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        }
       }
     },
     "aws-sign2": {
-      "version": "0.6.0",
-      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.6.0.tgz",
-      "integrity": "sha1-FDQt0428yU0OW4fXY81jYSwOeU8=",
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
+      "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=",
       "dev": true
     },
     "aws4": {
-      "version": "1.7.0",
-      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.7.0.tgz",
-      "integrity": "sha512-32NDda82rhwD9/JBCCkB+MRYDp0oSvlo2IL6rQWA10PQi7tDUM3eqMSltXmY+Oyl/7N3P3qNtAlv7X0d9bI28w==",
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
+      "integrity": "sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ==",
       "dev": true
     },
+    "bach": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/bach/-/bach-1.2.0.tgz",
+      "integrity": "sha1-Szzpa/JxNPeaG0FKUcFONMO9mIA=",
+      "dev": true,
+      "requires": {
+        "arr-filter": "^1.1.1",
+        "arr-flatten": "^1.0.1",
+        "arr-map": "^2.0.0",
+        "array-each": "^1.0.0",
+        "array-initial": "^1.0.0",
+        "array-last": "^1.1.1",
+        "async-done": "^1.2.2",
+        "async-settle": "^1.0.0",
+        "now-and-later": "^2.0.0"
+      }
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
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+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
       "dev": true,
       "requires": {
         "isexe": "^2.0.0"
@@ -6258,12 +6996,12 @@
       "dev": true
     },
     "wide-align": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.2.tgz",
-      "integrity": "sha512-ijDLlyQ7s6x1JgCLur53osjm/UXUYD9+0PbYKrBsYisYXzCxN+HC3mYDNy/dWdmf3AwqwU3CXwDCvsNgGK1S0w==",
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
+      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
       "dev": true,
       "requires": {
-        "string-width": "^1.0.2"
+        "string-width": "^1.0.2 || 2"
       }
     },
     "wrap-ansi": {
diff --git a/web/modules/custom/package.json b/web/modules/custom/package.json
index aae77b316..6ccc4a11a 100644
--- a/web/modules/custom/package.json
+++ b/web/modules/custom/package.json
@@ -18,7 +18,8 @@
     "gulp-sass": "^4.0.1",
     "gulp-strip-debug": "^3.0.0",
     "gulp-watch": "latest",
-    "minimist": "^1.2.0"
+    "minimist": "^1.2.0",
+    "node-sass": "^4.12.0"
   },
   "dependencies": {}
 }
diff --git a/web/themes/custom/edlptheme/gulpfile.js b/web/themes/custom/edlptheme/gulpfile.js
index c048bc226..800cb6c9b 100644
--- a/web/themes/custom/edlptheme/gulpfile.js
+++ b/web/themes/custom/edlptheme/gulpfile.js
@@ -28,16 +28,17 @@ function handleError(err) {
   console.log(err.toString());
 }
 
-gulp.task('scripts', function () {
+gulp.task('scripts', done => {
   gulp.src(['./assets/scripts/main.js', './assets/scripts/redirect.js']) // './assets/scripts/shared_variables.js',
     // .pipe(concat('main.js'))
     .pipe(gulpif(prod, stripDebug()))
     .pipe(gulpif(prod, jsmin()))
     .pipe(rename({suffix: '.min'}))
     .pipe(gulp.dest('./assets/dist/scripts/'));
+  done()
 });
 
-gulp.task('styles', function () {
+gulp.task('styles', done => {
   gulp.src(['./assets/styles/app.scss'])
     .pipe(sass().on('error', sass.logError))
     .pipe(autoprefixer({
@@ -49,44 +50,49 @@ gulp.task('styles', function () {
     // .pipe(cssmin())
     .pipe(rename({suffix: '.min'}))
     .pipe(gulp.dest('./assets/dist/styles/'));
+  done()
 });
 
-gulp.task('bower', function() {
-    gulp.src(mainBowerFiles({
-      "overrides":{
-        "masonry-layout":{
-          "main":"./dist/masonry.pkgd.min.js"
-        },
-        "imagesloaded":{
-          "main":"./imagesloaded.pkgd.min.js"
-        },
-        "jquery":{"ignore":true},
-        "ev-emitter":{"ignore":true},
-        "fizzy-ui-utils":{"ignore":true},
-        "get-size":{"ignore":true},
-        "outlayer":{"ignore":true},
-      }
-    }))
-      .pipe(gulp.dest('./assets/dist/bower/'));
+gulp.task('bower', done => {
+  gulp.src(mainBowerFiles({
+    "overrides":{
+      "masonry-layout":{
+        "main":"./dist/masonry.pkgd.min.js"
+      },
+      "imagesloaded":{
+        "main":"./imagesloaded.pkgd.min.js"
+      },
+      "jquery":{"ignore":true},
+      "ev-emitter":{"ignore":true},
+      "fizzy-ui-utils":{"ignore":true},
+      "get-size":{"ignore":true},
+      "outlayer":{"ignore":true},
+    }
+  }))
+    .pipe(gulp.dest('./assets/dist/bower/'));
+  done()
 });
 
-gulp.task('svg', function () {
+gulp.task('svg', done => {
   gulp.src(['./assets/img/*.svg', '!./assets/img/edlp-loader-anim.svg'])
     .pipe(svgmin())
     .pipe(gulp.dest('./assets/dist/img'));
   gulp.src('./assets/img/edlp-loader-anim.svg')
     .pipe(gulp.dest('./assets/dist/img'));
+  done()
 });
 
 // default gulp task
 // ,  'vars2sass' 'vars2js',
-gulp.task('default', ['bower', 'scripts', 'styles', 'svg'], function() {
+// gulp.task('default', ['bower', 'scripts', 'styles', 'svg'], function() {
+gulp.task('default', gulp.series('bower', 'scripts', 'styles', 'svg', function(done) {
   // gulp.watch('./assets/json/*.json', ['vars2js', 'styles', 'scripts']); //, 'vars2sass'
-  gulp.watch('./assets/styles/*.scss', ['styles']);
-  gulp.watch('./assets/styles/base/*.scss', ['styles']);
-  gulp.watch('./assets/scripts/*.js', ['scripts']);
-  gulp.watch('./assets/img/*.svg', ['svg']);
-});
+  gulp.watch('./assets/styles/*.scss', gulp.series('styles'));
+  gulp.watch('./assets/styles/base/*.scss', gulp.series('styles'));
+  gulp.watch('./assets/scripts/*.js', gulp.series('scripts'));
+  gulp.watch('./assets/img/*.svg', gulp.series('svg'));
+  done()
+}));
 
 
 
diff --git a/web/themes/custom/edlptheme/package.json b/web/themes/custom/edlptheme/package.json
index 9cb46618d..45d701d65 100644
--- a/web/themes/custom/edlptheme/package.json
+++ b/web/themes/custom/edlptheme/package.json
@@ -7,7 +7,7 @@
   "license": "GPLv3",
   "homepage": "https://encyclopediedelaparole.org",
   "devDependencies": {
-    "gulp": "latest",
+    "gulp": "^4.0.2",
     "gulp-autoprefixer": "^5.0.0",
     "gulp-concat": "latest",
     "gulp-cssmin": "latest",
@@ -16,13 +16,14 @@
     "gulp-json-to-sass": "latest",
     "gulp-json2js": "latest",
     "gulp-rename": "latest",
-    "gulp-sass": "^4.0.1",
+    "gulp-sass": "^4.0.2",
     "gulp-strip-debug": "^3.0.0",
     "gulp-svgmin": "^1.2.4",
     "gulp-util": "latest",
     "gulp-watch": "latest",
-    "main-bower-files": "latest",
-    "minimist": "^1.2.0"
+    "main-bower-files": "^2.13.3",
+    "minimist": "^1.2.0",
+    "node-sass": "^4.12.0"
   },
   "dependencies": {}
 }