Issue: Declining one Event of a Repeating Event declines every Repeating Event. For instance, if there is a weekly Repeating Event, and the User declines the Event in the third week--every Repeating Event is then declined.
When you select Event Details, the option to say Yes, No, or Maybe gives the impression that the action taken only applies to that Event since the Date Range of the Event only lists that day.
Steps to Reproduce:
1) Place Calendar Portlet on front page
2) Create a Daily Repeating Event. Confirm that the Event occurs on each day of the Calendar
3) Select one of the Events on a later date and select "View Details." Note that the Date Range of the Event is only for that day
4) Select "No" on whether you will attend
Expected Result: Only that day's repeating event is declined and is no longer visible on the Calendar
Actual Result: Every repeating event is declined and is no longer visible on the Calendar
Tested in 6.2.x and reproduced
Reproduced in master
6.2.x commit c44fe0b7e271673e6bae7b631d0d48aeed77cb4a
master commit f522506e1d9c5d5d54a353ac2d15e5cb8bfddd7a
6.2.x Plugins commit 8b9022b7e08a2dad8ebfe3e95f9588df595c9ee5