Created Invitation model linked to Event. Still untested.
Made some modifications to User model. Now we can access a users events based on what events they were invited to.
Added two way acceptance of invitation.
Events, invitations, and users invited users to events works very nicely so far. Testing to come.
Added my_events to User model
Added feature for create event. Changed events to all_events to see all the events a user has created or joined