Bug: 30681771
Test: SettingsUnitTests
Refactor visibility logging from InstrumentedFragment into a mixin. And
apply mixin in remaining fragments.
Change-Id: Ibbb59904336254a3e4bb9e8c7d0b36e5a6bc2622
Add a gear on Settings menu, and move a bunch of stuff from
overflow and advanced screen to there. Also move add network
to be the last item in the list rather than in overflow.
Also fix WifiP2p breakage.
Change-Id: I5c84c25e5ba9224f77dcd988b0b2850ae6e71168