[2/2] OmniGears: remove ActiveDisplay wallpaper

see also https://gerrit.omnirom.org/#/c/6087/

Change-Id: Ia8de23930a83f7f6abed5eaff492f91c7992572e
OmniGears: AD brightness - do your math homework max :)

http://jira.omnirom.org/browse/OMNI-752

Change-Id: Ibb123378c47a6e4c337740c95d5eb4eead4cd4b5
[2/2] OmniGears: On-The-Go mode

On-The-Go turns on the camera of your phone and streams it to an overlay,
which is drawn over everything.
this makes you feel like your display is transparent, as you see the content
behind it.

its really useful when you are using your phone while walking, thats why
we called it "On-The-Go"

allows to change transparency of the overlay via the notification.

have fun!

also cleanup menu settings

Change-Id: I1d6b538f9474f01cbe093d33983e8278fc44c1e8
[1/2] OmniGears: Active Display add shake event

- correct dependency option
- added option to bypass Quiet Hours (default now is not , that is 'privacy is first' decision)
- added option to configure time between shakes

Change-Id: Ibdf35b1e323fa15bf2e5da9ca8225533cd4c42c4