Verbosity, unicode and no collections

Some small improvements. The only change of behaviour is that by default, the script only logs things that have actually changed. If you want to see every file that it checks, use -v and if you only want to see errors, use -q.

Thanks for a great script by the way. I am now using flickr as my primary photo storage (with everything marked as private) and I use flickrmirrorer to create a local backup.