Add attending checkbox
Change column title
Write isAttending function
Set group name on ctrl opportunity object. Write function to toggle on click
Update opportunity in db attending changes
Write helper functions to change category in opportunity, group and database
Change ID in controller...fail.
Place variable in proper location, checkbox now working. Remove comments and console logs
Merge branch 'dev' into adminOppCheckbox
Merge branch 'adminOppCheckbox' into dev