[Layout] Avoid infinite digest exception

Auto-expand tree nodes on a timeout, instead of immediately.
This is necessary in cases where auto-expansion several
layers deep occurs; if done immediately, each expansion
will trigger a new digest cycle, which at a certain depth
will appear to Angular as unstable.

Done in the context of WTD-535.

platform/commonUI/general/bundle.json

@@ -17,7 +17,7 @@
             {
                 "key": "TreeNodeController",
                 "implementation": "TreeNodeController.js",
-                "depends": [ "$scope", "navigationService" ]
+                "depends": [ "$scope", "$timeout" ]
             },
             {
                 "key": "ActionGroupController",