Stuff added
Change time slots controller to redirect back instead of to user
Logic now complete for calendar but with very hacky true false thing which is easily manipulated, but I'm not sure if it's dangerous
Add participation create between user and activity
Correct incorrect participation syntax
Add ability to join and leave activities
Clashes now display correct list of items
Fixed bug that prevented activity descriptions from being saved
Add more for updating slash selecting dates for an activity
Finish selecting and viewing time slots for activities
Add ability to update activitiy times