fb: TRDS dark base theme

Change-Id: Ie25abfbf5258ac479ca8bc91033f6892bbbc6741
trds:[framework] dark images adjustments

Change-Id: Ie038c4a1aa535708c23f099fb5e836407e3d1603
TRDS: Dark DocumentsUI

for Downloads app

PS:
- fix settings

Change-Id: I87d49e97b8a0a67bd4d85f0137eb0960155428cb
fb: TRDS some tweaks and fixes (1/2)

some smaller issues fixed and optimizations:

- fix twilightmode was wrong assigned to wrong value
- ligtsensor mode after first immediattely switch it does
  not allow for 5sec to switch again....after the 5sec it switches
  to current state if the sensor changed its state in this time.
  This prevends on the one hand on bad light conditions a permanent
  switch between dark/light as well it does not bring the system into
  troubles due of to much configuration changes at the same time
- get rid completly of the observe for the UI_THEME_MODE value and
  handle all over the UIModeManager
- adapt slimActions and settings to this new behaviour/method
- some cleanup and minor fixes

Change-Id: I4b2401bf7bef992ad3112ae5ccc852cd29b46bd0

Conflicts:
	core/java/com/android/internal/util/slim/SlimActions.java