Settings: Lockscreen custom wallpaper (2/2)
- created a listpreference which changes the lockscreen background style (eg.
Color Fill, Custom Image and default)
- using the switch the preference for alpha seekbar (custom image only) or
ColorPreferencePicker switches.
*added necessary colorpicker java files and seekbar java

Change-Id: Ie9a49e7dd9ee9b08248da9406014a2f2aa4eda92
Signed-off-by: travp624 <travp624@gmail.com>