added vue-meta plugin, fixed article prev next, fixed page title on articles

web/themes/custom/materiotheme/assets/scripts/main.js

@@ -31,6 +31,9 @@ import router from 'vuejs/route'
 // import * as Locales from 'assets/i18n/locales.json'
 import { i18n, loadLanguageAsync } from 'vuejs/i18n'
 
+import VueMeta from 'vue-meta'
+Vue.use(VueMeta)
+
 import VUserBlock from 'vuejs/components/Block/UserBlock'
 import VMainContent from 'vuejs/components/Content/MainContent'
 import VSearchBlock from 'vuejs/components/Block/SearchBlock'
@@ -273,6 +276,12 @@ import 'theme/assets/styles/main.scss'
       _v_main_content = new Vue({
         store,
         i18n,
+        metaInfo: {
+          // if no subcomponents specify a metaInfo.title, this title will be used
+          title: "materiO'",
+          // all titles will be injected into this template
+          titleTemplate: "%s | materiO'"
+        },
         render: h => h(VMainContent, { props: { id: id, html: main_html, isfront: drupalSettings.path.isFront } })
       }).$mount('#' + id)
     }