Launch Heads Up in floating window [2/2]
AICP'fied.

PS2: Add another setting for testing
PS3: Add missing string
PS4: Remove test preference
Settings: HeadsUp timeout (2/2)

- Taken from SlimRoms

Conflicts:
	res/values/pixel_arrays.xml
Heads up: option to show always expanded (2/2)

- Taken from SlimRoms and ported by me @cristianomatos