Revert "Revert "Allow the status bar to be made visible by touching the top edge of the screen when it is hidden by a full screen application.""

This reverts commit 70fda87bdeb11c0bbe21e0540065cca5bd05ba29.
Revert "Revert "Make the height of the status bar trigger a config value so it can be adjusted per device.""

This reverts commit bb3efcab71275ab46cb604c4b99fd9a6b97b2555.
Add gesture based lockscreen security. [1/2]
This adds the ability to us a hand drawn gesture as
a means to unlock the device.

In the case that the gesture is forgotton or not
being recognized correctly, the fallback will be the
same as when using patterns.

PS2:
Return SecurityMode.Account as backup for gesture login.

PS3:
Poke the wakelock when a gesture is detected so the screen
will not timeout when an invalid gesture is entered.

PS4:
Clean things up a bit.

Change-Id: I4ca8d7edff0a8906220cf4561d8b90896520e0cd
Signed-off-by: iceandfire <arhamjamal@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java
	core/java/com/android/internal/widget/LockPatternUtils.java
Revert "Revert "Little derp""

This reverts commit 5dbd51a5001b1c0597429e0d77d58806cca65f30.