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

- Make navigation bar ready for per-user configuration.
  Also clean it up a bit.
  Id: Ic10bd161fce53bf30048a0cb927dcf1e2bfa7774

- Fix layout on N10
- Remove uncessary padding and logic
- Phone fixes
- Phone padding fixes

Change-Id: I8903b85b6ee8581f8564d9dc7b0d40f645d7647a
WMS: fix no thumbnail image of Gallery in the recent tasks list.

When it takes the screenshot of an application, it will calculate
the minLayer and maxLayer first, and if a window is full screen,
it won't deal with the windows below it. However, the surfaceview
is placed below a window but will be displayed at front, this make
the surface view can not be included when take the screenshot of
an application, then it diaplays a black area in the recent tasks
list.

If the currect window is full screen, no need to finish the
calculation.

CR-Fixed:566752

Change-Id: Iaf3e9a3e6520007571ea545ccc9c05d4b1b416fd
Revert "Add native java screen recorder [1/2] (WIP)"

This reverts commit e69f78c22d65dcd720668f572eb128a4838b49c5.