upgraded core, fixed customs modules

web/web.config

@@ -33,18 +33,6 @@
             <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
           </conditions>
         </rule>
-     <!-- If running on a PHP version affected by httpoxy vulnerability
-      uncomment the following rule to mitigate it's impact. To make this
-      rule work, you will also need to add HTTP_PROXY to the allowed server
-      variables manually in IIS. See https://www.drupal.org/node/2783079.
-        <rule name="Erase HTTP_PROXY" patternSyntax="Wildcard">
-          <match url="*.*" />
-          <serverVariables>
-            <set name="HTTP_PROXY" value="" />
-          </serverVariables>
-          <action type="None" />
-        </rule>
-    -->
     <!-- To redirect all users to access the site WITH the 'www.' prefix,
      http://example.com/foo will be redirected to http://www.example.com/foo)
      adapt and uncomment the following:   -->