settings: add back all keyboard IME features back (2/2)

this commit adds:

- ime switcher notification - thanks cm
- slims fullscreen disable on landscape
- slims force autorotation on IME
- volume button control for navigate in the message - thanks cm
- slims force to show always enter key

some fixes to the 4.2/4.3 implementations + added full multiuser
support for all this features

cheers

Change-Id: I58596f11ee09c6db77119f3e3044e1ec2dd30c0a
Status bar brightness control

+ added some fixes to original implementation (thanks mostly cm for that)
+ add multiuser support

Change-Id: I108086b07dea9cc6d59bfbdd9652b3aa33dcfe74
fix logical error on showing note dialog

Change-Id: I9f45348a87a9e753626276a8df4b5d5c60b29a0b
use better dialog handling on IME settings

sorry did not saw that crap from 4.3 implementation. use a better
dialog handling as well prepare it for future other dialogs
we may need here

Change-Id: Ibdbceaa9041f3f9d2d6ee55fe75556c398120bf8
Settings: add development animation transition mode 0.75 and 0.25

Change-Id: Iaaeb3757ef9b3b97d66d929629e9035ab511f72a
Implementation of Koush superuser (2/3)

Change-Id: Id048b9d0f5479bd6d5c583dfb6ee2ea7050e1b1e