settings: add accessibility events to lockscreen slider and shortcuts (2/2)

beside that it is nicer for ppl using talkback eg and get clear
instructions this solves as well a fc in settings lockscreen targets
when using accessibility services

fix wrong value assignment to settings provider on longpress option for
lockscreen shortcuts

Change-Id: I4fbda8017b65178c1e29d6b7c24a85ac5a0d3306
Settings: Lock before unlock the new way (2/2)

for more information see fb commit

Change-Id: I6bb41539383c2b02b62354b00c773505f396028e
Settings: More Lockscreen Colors (2/2)

PS2: fix derp caught by Chandra Poerwanto

Change-Id: I5469c42b4e944aab4b1b0c21d5ef41a8d1a1213a