Revert "SlimPIE: only allow interaction only if navbar is disable"

This reverts commit d55b1de65e4a4ccd0efe4b24b75ffe21eb146d25.
Toggle nav bar through power menu (2/2)

- This is highly based on this commit form SlimRoms: https://github.com/SlimRoms/packages_apps_Settings/commit/30482e059fb55b9d3aa4d461a0715d77ec70776a
- Now we can toggle nav bar on/of in power menu. It's easier to use PIE.

Thanks again to @kufikugel

Codes ported and new codes from @cristianomatos

Change-Id: I63c686ebd19d3a50afe3d71de191e484208000f2
[2/2] Add support for Peek app

Disable built in peek when Peek app is installed. Enable it again on app's unistall.

Change-Id: Icabb32c8322642eca81bccea7e053200a74a9b2b
Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>