framework : Auto Immersive Mode (1/2)

Automatically enables the immersive mode when someone opens the selected app.

PS2: Fixed whitespaces
PS3: more code style

Change-Id: I2d73465f07ede9e2cf48cdbd064d9e3ea18b778a
Signed-off-by: Umair Khan <omerjerk@gmail.com>
Merge remote branch 'aokp/kitkat' into kitkat