/event/:id - Fixed displaying button instead of message when user has volunteered
/ Fixed missing date and time in events list.
/event/:id - Replace Register button with test after user has registered.
/event/:id Increment number of volunteers for event after registers
Created some server-side tests for event.model and controller.
/event/:id - Bump cached number of volunteers when someone registers for
event.
eventSvc: add isUserRegistered() and getUsersForEvent()

isUserRegistered() no working
/admin/account/:id

Role dropdown is broken.