Lockscreen Gestures -

System settings component.
Adds settings for gestures active, traces active, sensitivity.
Adds gesture overlay to lockscreen layouts.

Depends on change 540 and 565

Change-Id: Icf1b1614e05ef4383d53d97813bf698325ff1408

Gesture updates:

- User can now define unlock and sound toggle gestures.
- Lockscreen tabs can now be fully disabled, but ONLY if there is
  some other method of unlocking the device enabled.  This includes:
  Trackball unlock, menu key unlock, and gesture unlock.
- Changed default gesture sensitivity to 3

Gestures fix

- added 'none' to xml attributes for 'orientation' -
- Updated GestureOverlayView to allow an orientation of 'none.

This allows the lockscreen to recognize gestures in any direction,
and of any complexity.

Fix gesture api properly.

Change-Id: I863f7cfcd4c5d27d9a1c3e080dccff0671fdf587

Lockscreen gestures color setting

Allow user to choose the color for gestures on the lockscreen

Change-Id: I588620e2f5110119b9f04a9ebb66357fbbe93c96

Lockscreen gestures

Allows the user to use custom gestures to launch activities
and shortcuts directly from the lockscreen.

These gestures can be programmed from the CMParts app under:
Input Settings-> Lockscreen Gestures

Change-Id: Icc5722213939d63f15761a644db9f43ca2ebe9e1