Lockscreen: longpress on expand challenge handle

- Unsecure screen lock, long press will unlock the device
- Secure screen lock, long press and widget will fade into the background and secure method is displayed

Change-Id: I7d980f8e7e07226c97a64a63910a1410e6fb84c0

Conflicts:
	core/res/res/values/symbols.xml

Signed-off-by: travp624 <travp624@gmail.com>