base: ActiveDisplay: fix for disappearing notification bar

What a derp
http://jira.omnirom.org/browse/OMNI-158
http://jira.omnirom.org/browse/OMNI-101

PS2
dont do it on secure lockscreens

PS4
check if lookscreen is enabled

Change-Id: Idf7fd7c15fcd87e2efb62f0a234e15f1df1921e8
Merge "base: ActiveDisplay: fix for disappearing notification bar" into android-4.4
Merge remote-tracking branch 'cm/android-4.4' into android-4.4