OmniGears: correct enablement of custom button binding sections

What a derp

Change-Id: Id75318c2caad64993304a0896019bd8b72de3e45
OmniGears: support for devices without notification LED configs

Hide useless options for devices that only have a single color
led and also dont allow changing the blinking frequency
e.g. find7

Change-Id: Id87dd7a0caf802c6ee0817b0b937cb0c1d94252e
[2/2] OmniGears: make swap volume buttons RTL aware

Change-Id: Ia0b8a9c8acdd69c283f04eb97fc8aa0cdb5a082b
Merge pull request #8 from omnirom/android-4.4

sync