Revert "Revert "[3/3] settings: Audio Themes Support""

This reverts commit 847c9beab258969f927fbcef5927622bbf11ace9.

Change-Id: I9673558fb9cc03be5027a5cfee6f2f26cba8c9d2
Revert "Revert "Settings: create sound dir directory if not existing, improve UX""

This reverts commit 39de11c72646b65c56abf243696f10d88baa4c96.

Change-Id: If227925b80066dc5e0f922e7dc3dde8130f6a2f0