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

src/scripts/js/es6/common/vuecomponents/utils/PrettyCreated.js

@@ -0,0 +1,33 @@
+import { prettyDate } from '../../utils/init'
+const TEMPLATE =
+`<div class="pretty-created" :title="'Posted ' + created">
+    {{ prettyCreated }}
+    <span
+        v-if="isEdited"
+        :title="'Updated ' + prettyUpdated"
+    >*</span>
+</div>
+`;
+
+Vue.component('pretty-created', {
+    template: TEMPLATE,
+    props: {
+        created: String,
+        updated: String,
+        detailed: {
+            type: Boolean,
+            default: true
+        }
+    },
+    computed: {
+        prettyCreated() {
+            return prettyDate(this.created, this.detailed);
+        },
+        prettyUpdated() {
+            return prettyDate(this.updated, this.detailed);
+        },
+        isEdited() {
+            return this.updated && (this.created !== this.updated)
+        }
+    }
+});