frameworks: Custom System Animations

Allows setting of some system animations.

Current List:

Activity Open
Activity Close
Task Open
Task Close
Task Move to front
Task Move to back
Window Open
Window Close
Window Insta Open
Window Insta Close

Duration Controls

Prevent overridePendingTransition option

Change-Id: Id360abe158d36ab85c1c0d0103428d4a8867e70c
Revert "Navbar merge fixes"

This reverts commit 27ce864ea4c8d170fa8f57ae6bd73bd2a70ff341.
fix navbar transparency

Change-Id: I6c302e86ad5657a9dfb5072a2e70bdc8cee4ec83

Conflicts:
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java