Lock views and prevent editing (#3094)

* working lock and unlock

* prevent flexible layout drop hints from showing

* fix lint issue

* wip

* disable mousedown when not editing in DisplayLayout

* continued wip

* Cherrypick new glyphs from add-new-glyphs-062320

* More new glyphs, updated art

- New glyphs: icon-unlocked and icon-target;
- Updated art for icon-lock glyph;

* Edit toggle refinements WIP

- Markup, CSS in BrowseBar.vue;

* More new glyphs, updated art

- New glyphs: icon-unlocked and icon-target;
- Updated art for icon-lock glyph;

* Edit toggle refinements

- Replaced toggle switch with button;

* prevent styling changes when locked

* fix lint issues

* fix tests

* make reviewer suggested changes

Co-authored-by: charlesh88 <charlesh88@gmail.com>

src/plugins/remove/RemoveAction.js

@@ -101,6 +101,12 @@ export default class RemoveAction {
     appliesTo(objectPath) {
         let parent = objectPath[1];
         let parentType = parent && this.openmct.types.get(parent.type);
+        let child = objectPath[0];
+        let locked = child.locked ? child.locked : parent && parent.locked;
+
+        if (locked) {
+            return false;
+        }
 
         return parentType &&
             parentType.definition.creatable &&