[2/2] OmniGears: more addition for tinted system bar

add option to allow tinted color change window shade panel
improve tinted color logic code
also while im here, improve quicksettings code
add Tinted tile

drawable courtesy of Alex Cruz

Change-Id: Ic3463f7005fe650038215753eddb17d386381926
Merge pull request #11 from omnirom/android-4.4

[2/2] OmniGears: more addition for tinted system bar