Re-implement magnetic targets

This reverts commit 8d037a2ded2edafc2ecafad2a8d799cb3f82f629.

Change-Id: I26da0ab2c9d65828bf9cd16a82dad7d1c50dc891
Status Bar: Fade CM widgets on Low Profile mode

CyanogenMod's status bar widgets do not fade (Circle battery, signal
text, etc), when low profile mode is entered.

This makes them behave.

Change-Id: Ibb79390d7ec08ce1bdc86a2d5e452ab4245f474f
AudioService: allow volume control on analog dock

This re-enables volume control on some Motorola docks.

Change-Id: If7751867de2c0cefb5a8518b5a6a607a9676b946
SystemUI: always use transparent notification shade

Devices with less than 512MB of memory have a solid
black notification shade. Remove the isHighEndGfx()
check to force a transparent notification shade on
all devices.

Change-Id: I9a68a2a8b0d36685f8899f3bbed43bb6bccb47b1
Add a long-click target (display settings) to the brightness tile

Change-Id: I538cda0ecf999467d7b6a30501807c0c52fb59b6
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1