coconut: some cleanup

* Remove Phone overlay (mdpi fix is merged in Phone app)
* Added & fixed some comments to the source files
* Reorganized alphabetically proprietary files list
* recovery.fstab: convert tabs to spaces
* Move gsm feature xml to mogami-common

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I76e48f85cb1a6ca1270bba3477f3a8f601b1e54a