fixes to make trakt watch list work

Trakt watch list doesn't work right now.
https://sickrage.tv/forums/forum/help-support/bug-issue-reports/8583-trakt-syncing-stop-working
This fixes the show not pausing after it added sometimes, episode watchlist not working, episodes with no air date being set to wanted and becoming stuck and never searched for, and adding to the backlog crashing the thread sometimes.