Tv extras

The normalization rules are slightly crazy (and sometimes ambiguous), but I _think_ we're missing a few things:
* `number_to_text` should return either `Six Thousand Ten` or `Six_Thousand_Ten` (depending on your interpretation of their underscores), but right now it returns `Six Thousands Ten ` (plural Thousands, trailing space).  It'll never add a hyphen, so you probably want to just .strip() the trailing space there instead.
* We should replace "any number of blank spaces" with just one, so probably need a `re.sub(r' +', ' ', title)`.
* We need to replace diacritics with their "correct counterparts" (so `é` -> `e`).  You should be able to normalize and use `unicodedata.combining()` to check for this. (That said, I can't find a single TV series with an accent in its name that actually has extras, so maybe it's moot...)