Remove old unused Backlight settings

to get the way free for the new settings.

Change-Id: Ibc349a46690627c8a313a6f07cf34932381455c8
Add back backlight brightness curve adjustment.

Settings part for this really really awesome work from Danny @cm

- new settings point in ASS->Display Brightness
- if auto brightness is selected you can change options with adjust
- change hysterse on each level
- add or split levels with longpress
- change ambients range

- also this commit resort and cleaned up a bit our ass display settings

cheers

Change-Id: I174cc7bc93f7cf6e0eb958fc275f4c1c9e588001
 Settings: Lockscreen custom shortcuts and 8 targets (2/2)

Normal phones need a bit more love on Lockscreen.

This commit adds

- the ability to add additional shortcuts on lockscreen. (so you can use 5 targets + 6 shortcuts)
- Ability to open shortcut only with longpress
- Ability to use 8 targets on all phones (8 targets / shortcuts disabled)
- fix cutoff lockscreenring
- some minor fixes
- only for phones at the moment. Tablets have already 8 targets

Patchsets:
- cleanup
- fix reset targets on mode change
- fix string
- added the other png's from jeff
- rebase

cheers

Change-Id: I8a9da05a20f07badd48b521b9610902a07458010