--Move in a simpler layouts approach.
--Single Layout mode loads ONLY ONE Layout for ALL Activities
--Multiple Layouts mode loads any combination of Layouts based
on the following settings:
-- OnAllActivities
-- ForFreeActivities
-- SpecificActivities
--Split the Layouts::Manager to Synchronizer and
Manager classes. The Synchronizer is responsible
to keep all Active layouts in sync with user
preferences
Michail Vourlakos