[Browse] Simplify Edit Representation

Simplify edit registration and remove extra abstractions.  No longer
attach a status listener for every representation-- just use a single watch
for the edit controller.  Simplifies logic involved in switching controllers.

https://github.com/nasa/openmct/issues/1360

platform/commonUI/browse/bundle.js

@@ -41,7 +41,6 @@ define([
     "text!./res/templates/items/items.html",
     "text!./res/templates/browse/object-properties.html",
     "text!./res/templates/browse/inspector-region.html",
-    "text!./res/templates/view-object.html",
     'legacyRegistry'
 ], function (
     BrowseController,
@@ -64,7 +63,6 @@ define([
     itemsTemplate,
     objectPropertiesTemplate,
     inspectorRegionTemplate,
-    viewObjectTemplate,
     legacyRegistry
 ) {
 
@@ -141,10 +139,6 @@ define([
                 }
             ],
             "representations": [
-                {
-                    "key": "view-object",
-                    "template": viewObjectTemplate
-                },
                 {
                     "key": "browse-object",
                     "template": browseObjectTemplate,