Vue Comments: Comments ported to Vue + DnD fileupload

* Drag and drop files to comment editor to add a file attachment
* Using Vue to render comments

Since comments now has attachments we need to update the schemas
./manage.py maintenance replace_pillar_node_type_schemas

gulpfile.js

@@ -40,7 +40,8 @@ let destination = {
 let source = {
     bootstrap: 'node_modules/bootstrap/',
     jquery: 'node_modules/jquery/',
-    popper: 'node_modules/popper.js/'
+    popper: 'node_modules/popper.js/',
+    vue: 'node_modules/vue/',
 }
 
 /* Stylesheets */
@@ -135,6 +136,7 @@ gulp.task('scripts_concat_tutti', function(done) {
 
     let toUglify = [
         source.jquery    + 'dist/jquery.min.js',
+        source.vue       + 'dist/vue.min.js',
         source.popper    + 'dist/umd/popper.min.js',
         source.bootstrap + 'js/dist/index.js',
         source.bootstrap + 'js/dist/util.js',