Squash experiment

[settings] long press back to kill configurable timeout (2/2)

1 - 2 seconds (default)
2 - 1,5 seconds
3 - 1 second
4 - 0,5 second

Forward ported from crDroid

Navigation Bar height

Based on simple aosp's, removed there extra file (click) and just added
it to the main display setting creds liquid

Revert "Navigation Bar height"

This reverts commit c7d77bb6ee2af321d1de052e3087392532cbbb97.

Experimenting with layouts
Merge branch '5.0' of https://github.com/Validus-Lollipop/android_packages_apps_Settings into 5.0