Settings: Lockscreen Colors [2/2]

PS2: Separate settings into mutiple and
	create fragment to hold them
PS3: String change.
PS?: Lock image selector
PS?: Custom Lock-image colorize option

AICP:
- Modified for AICP source
- Added margaritov ColorPicker
- Removed custom lock icon picker (ccouldn't get it to work for the love of God)
- Move settings to AICP Extras

Change-Id: I46bb16570916645712b75c05f34235fdbd271650