Elements pool and drag drop (#2196)

* Implemented drag-and-drop composition

* Added composition policy for tables

* Reimplemented elements pool in Vue

* No need to resolve all objects on the navigated path

* Only show elements pool in edit mode

* Remove old elements pool

* Updated legacy code to use composition policy API

* Keep object in sync when mutated

platform/containment/bundle.js

@@ -58,7 +58,8 @@ define([
                     "category": "action",
                     "implementation": ComposeActionPolicy,
                     "depends": [
-                        "$injector"
+                        "$injector",
+                        "openmct"
                     ],
                     "message": "Objects of this type cannot contain objects of that type."
                 },

platform/containment/src/ComposeActionPolicy.js

@@ -36,10 +36,11 @@ define(
          * @memberof platform/containment
          * @implements {Policy.<Action, ActionContext>}
          */
-        function ComposeActionPolicy($injector) {
+        function ComposeActionPolicy($injector, openmct) {
             this.getPolicyService = function () {
                 return $injector.get('policyService');
             };
+            this.openmct = openmct;
         }
 
         ComposeActionPolicy.prototype.allowComposition = function (containerObject, selectedObject) {
@@ -49,11 +50,8 @@ define(
 
             // ...and delegate to the composition policy
             return containerObject.getId() !== selectedObject.getId() &&
-                this.policyService.allow(
-                    'composition',
-                    containerObject,
-                    selectedObject
-                );
+                this.openmct.composition.checkPolicy(containerObject.useCapability('adapter'),
+                    selectedObject.useCapability('adapter'));
         };
 
         /**