public static function getDefaultAllowedMimeTypesUpload()
{
return '{pdf=application/pdf}{ppt=application/powerpoint}{gz=application/x-gzip}{tar=application/x-tar}{tgz=application/x-tar}{zip=application/x-zip}{bmp=image/bmp}{gif=image/gif}{jpeg=image/jpeg}{jpg=image/jpeg}{jpe=image/jpeg}{png=image/png}{tiff=image/tiff}{tif=image/tiff}{txt=text/plain}{mpeg=video/mpeg}{mpg=video/mpeg}{mpe=video/mpeg}{qt=video/quicktime}{mov=video/quicktime}{avi=video/x-msvideo}{flv=video/x-flv}{doc=application/msword}{mp4=video/mp4}{mp4=application/octet-stream}';
}