Commented all methods in EventsController

Added in comments for methods: store() - line 33 to line 63,
createEvent() - line 113 to line 115, viewAllEvents() - line 113 to line
128
Commented all methods in UsersController

Added in comments for methods: create() - line 22 to line 26, store() -
line 34 to line 58, login() - line 108 to line 110, handleLogin() - line
113 to line 127, eventOrganiserProfile() - line 129 to line 131,
sponsorProfile() - line 133 to line 135, logout() - line 137 to line
142, createOrganisation() - line 144 to line 146,
handleCreateOrganisation() - line 148 to line 166