MediaGroup: Title sanitization common length
With the current integration of MediaGroup, it seems that the title isn't grouped by the most common pattern as it used to be for VideoGroups.
For example:
- a_cool_filename_01.mp4
- a_cool_filename_02.mp4
- a_cool_filename_03.mp4
The above files will be grouped into a MediaGroup named: a_cool
and not a_cool_filename_0
as it used to be.