Bug in media types extension parsing

[Laura Arjona Reina]

As reported by Michael Macnair in the mailing list (Thanks!):

media_types/__init__.py:109:
 if filename.find('.') > 0:

should be:

 if filename.find('.') >= 0:

Because otherwise files of the form "./blah.mp4" don't work, which
happens with the localfiles plugin.

Ditto for line 87.

Cheers,
Michael

[ayleph]

This issue was already submitted and fixed. Closing as duplicate of #5068.