Show title or equivalent for revised objects
Refactor to add event to session
Make generic JsonType for JSON <-> db

Refactor as_json, DateTimeEncoder to ggrc.utils
Remove duplicated code in ggrc.behave.utils
Merge pull request #68 from reciprocity/feature/log_events

Display title instead of internal id for revised objects
Private program prototype, ready to demo.
Merge remote-tracking branch 'origin/feature/update-sqlalchemy' into feature/update-sqlalchemy