FIX: dated episode is identified as series

[PDA-1]

Sometimes, an episode is identified as series, even when it has a date in the filename. This causes wrong filename to be created.

In case of a movie, there is a check if it contains a date, and if so it's marked as dated. This check doesn't exists in case of an episode, so this fix adds it.

[dnzbk]

Thanks for the fix. To ensure proper coverage, could you add such test cases to the testdata.json file?

[PDA-1]

Happy to help, I've been using Video Sort for years now, and it's nice to be able to give something back.
It's actually my first ever code change on github.

About an example, it's tricky, it happens to me with some specific episodes which looks normal (always with "The Daily Show"), only few time every few weeks. I couldn't find the pattern for the issue.
It's probably something inside the guessit module.
When I went over the code, and saw the missing condition, I added the condition, re-run a failed file, and it worked.

[dnzbk]

Ok, I see.
I tested it and everything looks good.
The changes are straightforward and should not break anything.