event_attributes has to be a hash
Log event in stories/create interactor
Extracted EventInteractor
Do ids ourselves
Fix order of arguments
Save event attributes as json
Raise error by using "create!"
Added validates to LogEvent
Merge pull request #9 from eMergence-by-Design/feature/event-logger

REVIEW: event logger
Merge branch 'feature/stories' into feature/add-interactor-story-update

Conflicts:
	app/backend/interactors/stories/create.rb
Made Update an EventInteractor