Fix bt tethering

Change-Id: I859c6eacd3af854342969389ec43a6da1251985a
Allow write access to sdcards

Change-Id: Ieeb14884b0eb709344cff45c5599351652f2a9df
Revert "Allow setting the homescreen grid size in Trebuchet."

This reverts commit da05e5cdabaf5f63025d83b9c7d55c454723141d.

This is not needed for cm-11.0 and breaks the build.

Change-Id: I76068410ed0408e89d0dce028dc399265c07702d
Merge remote-tracking branch 'cyanogenmod/cm-11.0' into kk