Quicksettings: Sound tile

Dual Ringer & Volume tile.

* Click on front goes to next ringer mode (silent, vibration, sound).
* Click on back goes to volume change.
* Long click goes to sound settings.
* Handles Vibrate when ringing.

Screencast: http://www.youtube.com/watch?v=gqlPhRBruSU

Based on commit: https://gerrit.paranoidandroid.co/#/c/522/ by cristianomatos.

PS2: Removed tabs.

Change-Id: Ida4b0f05e8a886b5249d758f1efb36bb364275cf

Conflicts:
	packages/SystemUI/res/values/pa_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsModel.java
Status bar brightness control

+ added some fixes to original implementation (thanks mostly cm for that)
+ add multiuser support

Change-Id: Ibc5cc15a9b43eade73670d308d5cc788c93b6210

Conflicts:
	core/java/android/provider/Settings.java
Revert "Fix last signal bar being a pixel to high."

Thanks @thederekjay who find out that this commit caused a bug with the signal icon.
This reverts commit 5d9f58f6ad3685c3ff36bc8117cb4509e58e382f.
Revert "Wifi: wifi not connecting, once the APN gets disabled state"

This reverts commit 31c80d0b32db73c0b1775752843875826842599b.
Lockscreen Notifications: dismiss all button, improve animations, cleanup
Lockscreen Notifications: fix show/hide of show all button

& fix endless SystemUI FC when SystemUI is killed
Fix brightness commit

Please, test commits before pushing! It's annoying to just pull the newest changes while working on something and first of all have to fix the build.
Lockscreen Notifications: fix NPE