Settings: follow kitkat's ui add holodark elements

- manage apps; tab selector and ram usage
- battery data usage bar
- app widget toggle

Signed-off-by: Andrew Warfield <hiasant@gmail.com>
Change-Id: Ic7027b48ac7f88440432da12c0889dfb3988128e
[2/2] Settings: Lockscreen Setttings

Change-Id: I4323f42646a02e5276fdbe18a702aa858781fec2