- added an action for the API call that retrieves the WLB VM recommendations
- removed the thread used for updating the menu items, so that we always access the menu items on the UI thread and do only the server calls on separate threads (for WLB, getting the recommendations now is done on the new action, for non-WLB we have the `workerQueueWithoutWlb`)
Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
