Add release.update event

Proof of concept commit.

It updates the database and calls movie.update.id to refresh the entire movie in the frontend. It would be better to crease a static js file in the release folder and add release functionality there including updating one release only.
clean-up searcher
frontend release.update
Add missing status
Update movie quality status colour and text

It isnt perfect this way. I think we need to add a sepperate function to
do this and call that from both when CPS is loading the page and when it
updates a release (e.g. just rebuild the icons)
Remove movie_dict