Update service.py

Flag as sync if video filename (without extension) is equal to subtitle filename (without extension). Probably useful in most cases, not sure how many people rename the release to something else.

Also extend sorting to get the best matches on top even if moviehash doesn't match (moviehash match > same filename for the sub. and movie > Movie title in sub. filename)

*note, my intention was not to do a PR on 4 commits, I was doing some testing only on the OSUtilities but it ended up here in the PR, I need to learn Github.....sorry