header partial for user session
added event model
added events controller
added form for new event
fixed user-event association
added link in events/show view to go back
added session views to event
added status field to participations
added link to session view in event show
changed name of session to to_session to avoid problems in controller
events now add active participants to session + tests
added creator of the event to list of participants
cleaned removed files
added current_users response in json
fixed params for participant_ids
added css class 'user_id' to header so sessionModel in client can know it
fixed issue wiht devise login
added header to session view
modified source for .js files
shows current user as 'You' in list of participants of an event