Symlinked directories are not found by _search_video

[alexwh]

For example, if my searchdir is /home/user/videos, and in that directory I have a symlinked folder to elsewhere (another drive, etc), it will not descend into that directory and say the episode could not be found.

[z411]

scandir doesn't seem to descend into symlinked directories, even if I set the followlinks flag, so for now I'll return to using Python's os.walk(). It should work in the latest commit.

[alexwh]

Yep, works fine now. Thank you!