Add mime types for m2v,3gp,3g2 extensions. Closes #652.
Add mime types for m2v,3gp,3g2 extensions. Closes #652.

envato/plupload,vitr/fend005-plupload,vitr/fend005-plupload,moxiecode/plupload,envato/plupload,moxiecode/plupload