Refactor debug log messages, and make sure they aren't super long
Refactor debug log messages, and make sure they aren't super long

mozilla-services/pageshot,fzzzy/pageshot,mozilla-services/screenshots,mozilla-services/pageshot,fzzzy/pageshot,fzzzy/pageshot,mozilla-services/screenshots,mozilla-services/screenshots,mozilla-services/screenshots,fzzzy/pageshot,mozilla-services/pageshot,mozilla-services/pageshot