fix(event) Fixed map coordinates problem

Fixed a problem when adding/editing events and changing the coordinates in the map which wasn't working.
fix(event) Can now delete 'null' attendances and RSVPs

Before, if a non existent user profile was swiped or RSVP'ed( e.g. an incorrect PID was included in the mass attedance import Excel sheet) it was not possible to delete these swipes or RSVPs. Now, it is.
Merge branch 'misc-changes'
Merge branch 'master' of github.com:fiuhonorstechteam/myhonors