clean up seattle background a touch
Merge branch 'master' of github.com:qviri/electric2go
Merge branch 'master' of github.com:qviri/electric2go
several old changes to process.py

- improve statistics a little bit by finding a few more "trips"
that aren't actually trips

- logic to handle avconv-cuts-off-frames bug (rather than just
blindly guessing at the problem)