Persist User preference widths for MCTSplitPane

Fix to Issue #1646
Persist MCTSplitPane widths to local storage, thus when user reloads, the Panes maintain dimensions
Use persisted widths if available otherwise use default
Add tests for localStorage and fix failing tests

platform/commonUI/general/bundle.js

@@ -374,7 +374,8 @@ define([
                     "depends": [
                         "$parse",
                         "$log",
-                        "$interval"
+                        "$interval",
+                        "$window"
                     ]
                 },
                 {