Settings: add scale down crt animation - thanks a ton to xploidwild

really nice idea...fits perfectly into our animation options
for CRT

reword the different modes

Change-Id: Ifc2a5cd5481883ab863e01d9faeefee97716aa92
Status bar brightness control

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

Change-Id: I4d9c68ec7d1b434826960f75ad38d9ecc3434b12
Settings: add development animation transition mode 0.75 and 0.25

Change-Id: Iaaeb3757ef9b3b97d66d929629e9035ab511f72a