Beta - r348

• feature: support of custom genres (the dropdown for genres is now editable, import of new genres through NFO will create them)
• feature: improved support of extrathumbs and initially support of extrafanart (for details see here)
• feature: added support for a movieset artwork folder (for use with the XBMC Addon “Movie Set Artwork Automator - for more details see here)
• feature: added trailer column in movielist
• fix: display of movie name will no longer be weird after renaming the movie
• fix: improved renaming logic (should work better on windows)
• fix: improved writing of certifications to the NFO
• fix: moved statusbar a bit down, so it will be visible on all screens
• fix: added a “loading image” to visualize wether background tasks are still running
• fix: added a warning on close of tmm, if a background task is running
• fix: some minor things I forgot 😉

Once again: thx to Myron for his work!