Should add Traditional in PIE
update preloaded-classes

Remove some preloaded-classes and fix typo for deleting log messages
as the followings during booting.

W/Zygote  (  163): Class not found for preloading: android.bluetooth.
BluetoothAudioGateway
W/Zygote  (  163): Class not found for preloading: android.bluetooth.
HeadsetBase
W/Zygote  (  163): Class not found for preloading: undroid.content.Ab
stractThreadedSyncAdapter$SyncThread

Change-Id: Id02e0cccaeb150f48e12d67b2d691df828842e4c
LockscreenPattern : Toggle dots/error pattern visibility (1/2)

Give user ability to hide error pattern / dots.

Part 2 : http://review.cyanogenmod.org/#/c/33004/

Patchset 2 : Minor formatting
Patchset 3 : Cleanup commit msg

Change-Id: I2af7403b0f72c72e13dd1dec73f8d335ff4029bf