Fix sorting of navring

lol I do it wrong since we integrated our custom navring. Order logic is not the same
as the order logic in settings. Currently it is from right to left. This change
change it from left to right.

Change-Id: I5dfe3fabcb58726f266f4c5fcdbcf912ca885885
Fix Navring shows up on all buttons

Change-Id: I008b9e29628ada3ea728ce12233a50915c77c76b
Frameworks: Change navbar general behaviour (1/2)

This commit changes that navbar is present on all devices even
with hardware keys. On hardware key devices the navbar height is
set to 0 as default now. Several reasons for that.

- no SystemUI restart when de/activating (last one we had :p)
- our navbar is very resource friendly so even no problem for the
  low end devices
- we can now use some of the navbar stuff you will see in next commits
  navbar magic :p

This commit also respects the different handling off menu's. Thats
why a part of the code (hasNavigationBar()) will be still left because
it is needed in main for

core/java/android/view/ViewConfiguration.java
core/java/android/view/IWindowManager.aidl
core/java/android/view/WindowManagerPolicy.java

this files which are controling that.

Settings commit:
- additional cleanup of no needed imports

cheers

Change-Id: I7838a7f25744de965c35097880abd760347244dd

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java