Revert "NavigationBar : Customization"

This reverts commit fa4b009c256c1eab6fc75012800bd557f25604dd.
NavigationBar : Customization

Includes:

- Allows user to customize navigation bar.
  Features :
   - Choose from 1-6 # of buttons
   - Re-arrange / assign buttons
  Id: Idc9f5f401f15d207504e49de47666bb5510a06ca

- Navbar : Rework logic for determining orientation
  This patch introduces better checks for hybrid ui's.
  This should fix issues of small buttons due to incorrect ui determination
  Thanks Rolf Arne Schulze for testing :)
  Id: If5b61dc4764a98deedb5b801d11451fed2488cba

- Fix layout on N10

Change-Id: I8903b85b6ee8581f8564d9dc7b0d40f645d7647a