LockscreenPattern : Toggle dots/error pattern visibility (2/2)

Give user ability to hide error pattern / dots.

Patchset 2 : Cleanup commit msg

Change-Id: Ifdd4615c7116f974a0a67079d58a521e84d76367
LockscreenPattern: Fix toggle dots/error pattern visibility

This fix the issues dot/error pattern state doesn't save.
also cleanup redundant code.

Change-Id: Iebaac9679ad9c621d62effd700689485db7c252a

Conflicts:
	src/com/android/settings/SecuritySettings.java

TODO: Change leftover Liquid stuff to Carbon. Dont feel like doing it now lol
Bring back Power Widget

For those of you who cant deal with change... :p

This reverts commit 209beec00634b2b427fce1ac11d0a400c1025e66.

Conflicts:
	AndroidManifest.xml
	res/layout-finger/order_power_widget_button_list_item.xml
	res/values/strings.xml