[skip ci] remove :not in favor of v-if

app/assets/javascripts/right_sidebar.js

@@ -146,7 +146,7 @@ import Cookies from 'js-cookie';
     Sidebar.prototype.openDropdown = function(blockOrName) {
       var $block;
       $block = _.isString(blockOrName) ? this.getBlock(blockOrName) : blockOrName;
-      $block.find('.edit-link:not(.hidden)').trigger('click');
+      $block.find('.edit-link').trigger('click');
       if (!this.isOpen()) {
         this.setCollapseAfterUpdate($block);
         return this.toggleSidebar('open');

app/assets/javascripts/vue_sidebar_assignees/components/assignee_title.js

@@ -18,8 +18,8 @@ export default {
       <template v-else>
         Assignee
       </template>
-      <i aria-hidden="true" class="fa fa-spinner fa-spin block-loading" :class="{ hidden: !loading }"></i>
-      <a class="edit-link pull-right" :class="{ hidden: !editable }" href="#">Edit</a>
+      <i v-if="loading" aria-hidden="true" class="fa fa-spinner fa-spin block-loading"></i>
+      <a v-if="editable" class="edit-link pull-right" href="#">Edit</a>
     </div>
   `,
 };