Quiet Hours: allow disabling of system sounds (1 of 2)

* this include touch and lockscreen sounds

Change-Id: I4b16be00ae24dafd0039834bf63f6df3ef918619
QuietHours: clean up and consolidate code

Change-Id: Ib745ba91f800489518f1c7b5d2512ba946039696
Camera button support: useful features & bugfixes (1/2)

Screw the remapping, let's make something more useful!
Replaced the code to actually launch Camera app, not just fire the shutter.
I won't remove it: it's cool to have an option to double-click Home for Camera.
Added:
  * Camera wake (with button half-press) and unlock options
  * "Peek": releasing the half-pressed Camera button will
    turn the screen back off
  * Camera playback control

Change-Id: Id49e09e20d81cd80d9800ab8ab0f200d44485a09
Frameworks: QS performance profiles tile

Patchset 2: Fix not null comparation
Patchset 3: xxhdpi drawables
Patchset 4: Fix xxhdpi drawables (thx blunden)
            Rebased
Patchset 5: Add suggestions
            Sync on boot the system property with the setting
Patchset 6: Rebased

Change-Id: Ib32d3734b63f88a3473e0ab10d8edf30dae9ceb6
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Merge "Quiet Hours: allow disabling of system sounds (1 of 2)" into cm-10.2
Merge "QuietHours: clean up and consolidate code" into cm-10.2
Merge "Frameworks: QS performance profiles tile" into cm-10.2
Merge remote-tracking branch 'cm/cm-10.2' into cm-10.2

Conflicts:
	core/java/android/provider/Settings.java
	core/res/res/values/symbols.xml

Change-Id: I472243370ae19ba087306b7754e104e5db23ea7d