Refactored ServiceOverlay. Now the service doesn't die when the views are hidden
All overlay functionality provided by OverlayViewManager

OverlayViewManager was converted to a bean. All it requires to function fully is for a service to have it as a field and to call destroy() when the service gets destroyed
Condensed ServiceOverlay and ServicePassword into ServiceSimplePass
Renamed OverlayViewManager to OverlayManager
Encapsulated all interactions with vault into VaultManager
Renamed IWorkerListener to IWorker
Got rid of all the Uri passing in the IFragListener, IWorker, and IUIListener
ActMain kills itself in onStop instead of onPause