UI enhancement fixes 2 (#3225)

- Fixed incorrect CSS naming: `c-frame-edit__move` changed to
 `c-frame__move-bar`;
 - Fixed `display: contents` that was erroneously applied to
 `u-angular-object-view-wrapper` and preventing styling from being
 applied to plots, renamed class to `.l-angular-ov-wrapper`;
 - Removed commented CSS;

src/plugins/displayLayout/components/LineView.vue

@@ -44,7 +44,7 @@
     </svg>
 
     <div
-        class="c-frame-edit__move"
+        class="c-frame__move-bar"
         @mousedown="startDrag($event)"
     ></div>
     <div