[1/2] SystemUI: Network speed indicator

Change-Id: Ic82517ceb4242855db076afdce2fee0a3e3194b1
Merge remote-tracking branch 'aospa/kitkat' into kitkat
SystemUI: hide up arrow NavRing indicator if no targets present

If there aren't any navring targets setup (the user has removed all of
them, or maybe search assistant is not present) then there is still a
hint in the lockscreen to pull up from the nav bar.

If there are no targets setup, hide the arrow indicator.

Change-Id: I65103a4cec668a9a8b3f678f991f5acba17d19f5
Signed-off-by: Roman Birg <roman@cyngn.com>

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
Allow translucent navigation bar in landscape mode.

Change-Id: I5388f3f8a34533624619714bacfba52f95fc6d85
Fix glitch appearing when using translucent system bars in landscape.

Before: http://i.imgur.com/zJCjCvx.png
After: http://i.imgur.com/v563Shz.png

Change-Id: I0580ced6dcd614239ea0815bc9943c9bbe86eb99

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java