Allow theming of lockscreen

Change-Id: I10799482e0b393746b4c9818f94862109fac6006
Merge "Allow theming of lockscreen" into jb-mr1
Add back backlight brightness curve adjustment.

Change-Id: I1dbcc9a35b44abc077e2722a4e81eb1e83d463fa
Signed-off-by: kecinzer <kecinzer@gmail.com>
Merge remote-tracking branch 'aokp/jb-mr1' into jb-mr1