SystemUI: A proposal for a new quiet hours icons

 PS2 added xxhdpi icons
 PS3 removed xxhdpi icons
Change-Id: I87e660210e2089d1bb09da47d39695bbda2889af
AirPlay mirroring WIP.

Change-Id: I6f45b393afb2f9d438d4aa548e8149946741c928
Fix certain setting writes being incorrectly skipped.

If a value that previously had a very long value (over the 500 char
threshold) is now set to null, isRedundantSetValue would incorrectly
return true even though the value was changed.

Change-Id: Ia5304743024ec01024be98aa51ed260d38caf93c
Merge " SystemUI: A proposal for a new quiet hours icons" into cm-10.2
Merge "Fix certain setting writes being incorrectly skipped." into cm-10.2
SystemUI/Added ADB over network QuickSettings Tile

Change-Id: I340846a171571a7b61d2c68f2a6875794be5d5b2
Navbar: Fix MDPI & HDPI landscape layout

Before: http://i.imgur.com/89SmFbX.png
After: http://i.imgur.com/UbuAggD.png

Change-Id: I6623cb97881313886de39a67baa98f7bd4b0696a
Merge "SystemUI/Added ADB over network QuickSettings Tile" into cm-10.2
Merge "Navbar: Fix MDPI & HDPI landscape layout" into cm-10.2
Merge commit 'refs/changes/49/50449/8' of http://review.cyanogenmod.org/CyanogenMod/android_frameworks_base into HEAD