Settings: Lockscreen Colors and Lock Image [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

Change-Id: I46bb16570916645712b75c05f34235fdbd271650

Conflicts:
	res/values/pa_arrays.xml
	res/values/pa_strings.xml
	res/xml/additional_settings.xml
Navring last app toggle (2/2)
Settings: Lock before unlock the new way (2/2)

for more information see fb commit please.
target selection if lock before unlock is activated
will be enabled and shows the repective settings dependend
on if it is a phone or tablet

Change-Id: I6bb41539383c2b02b62354b00c773505f396028e

Conflicts:
	res/values/slim_strings.xml
	res/xml/security_settings_biometric_weak.xml
	res/xml/security_settings_password.xml
	res/xml/security_settings_pattern.xml
	res/xml/security_settings_pin.xml

Conflicts:
	res/values/pa_strings.xml
	src/com/android/settings/SecuritySettings.java