RuudBurger/CouchPotatoServer — pull request #1367 by pstadler (2013-01-27 18:30:28+00:00)
Title: Fix a problem where a folder couldn't be deleted because it wasn't empty

I was frequently running into the following problem after a movie has been renamed:
```
[tato.core.plugins.renamer] Couldn't remove empty directory [...]
```
The original folder contained files and sub-folders. Since `os.rmdir()` can't delete non-empty directories, `shutil.rmtree()` should be used instead.