Frameworks: better navbar and navring support for ppl without gnow

an installe without google now had some negative effect on our
custom navring/navbar actions

- do not depend on search action on tiny circle lockcreen...check targets available instead
- same for navbar transparency
- fix google typo
- split ontouchlistener for home button and tiny circle due that
it does not make sense to react same like home button if the user
assigned to the home button a custom action

cheers

Change-Id: I8e6a250c3b4ee5f2c17ef48bbe9532511a7737d6