Initial implementation of Edit mode (#2181)

* Adding edit mode API and buttons

* Select navigated object by default. Enable table configuration in edit mode.

* Fixed issue with Table configuration

* Removed debugging code

* Added basic documentation to Editor API

* use selectable, table is selection[0], inspector cleans up

Update browse to set selection using openmct.selection.selectable
on navation so that selection contexts can be determined correctly.

Update table configuration to reference the first item in selection
instead of the last item in selection when displaying.

Update inspector code to remove display node from document on destroy.

* properly remove capturing handler

* inspector views respond to editing

InspectorViews respond to editing instead of openmct rerendering
the inspector on edit.

src/api/api.js

@@ -28,7 +28,9 @@ define([
     './ui/Dialog',
     './ui/GestureAPI',
     './telemetry/TelemetryAPI',
-    './indicators/IndicatorAPI'
+    './indicators/IndicatorAPI',
+    './Editor'
+
 ], function (
     TimeAPI,
     ObjectAPI,
@@ -37,7 +39,8 @@ define([
     Dialog,
     GestureAPI,
     TelemetryAPI,
-    IndicatorAPI
+    IndicatorAPI,
+    EditorAPI
 ) {
     return {
         TimeAPI: TimeAPI,
@@ -47,6 +50,7 @@ define([
         TypeRegistry: TypeRegistry,
         GestureAPI: GestureAPI,
         TelemetryAPI: TelemetryAPI,
-        IndicatorAPI: IndicatorAPI
+        IndicatorAPI: IndicatorAPI,
+        EditorAPI: EditorAPI
     };
 });