core: Fix typos in AOSP EN resources

Change-Id: I40220888c2fbe87629d17fc52046e554388de3ee
KeyGuard: fixed strings warnings

Change-Id: I53047334512de40e64b01f1824861fb3c804eedd
frameworks: disable loading notification groups in System profiles

While the functionality of groups was left in the ProfileManager
backend, the front end no longer exists, and there were default
notification groups still being loaded. Remove the default ones and do
not load any that may have been persisted.

Change-Id: I4e4102607f1380d6fc5f6be7746d06bebf3c006b
Signed-off-by: Roman Birg <roman@cyngn.com>