Issue 6722: CM File Manager can not Play/Start files recorded with CM embedded Soundrekorder

Issue: http://code.google.com/p/cyanogenmod/issues/detail?id=6722

Updated "video/3gpp" and "video/3gpp2" mime/types extensions

Change-Id: I5c04a582ea5f961dd6387602613d5b2248a9ff5e