[1/2] Base: ActiveDisplay (rework interface Again)
[1/2] Base: more improve Active Display

Thanks OmniRoms-AOSPAL-Mooke
Base: fix SystemUI ActiveDisplay

fix http://jira.omnirom.org/browse/OMNI-708
fix http://paste.omnirom.org/view/e7039c0b
fix http://paste.omnirom.org/view/6977cb45