Clean up recurring event information on Calendar events
Summary: Ref T11326. This adds prev/next links for recurring events (ala D16179) and moves the "accept/decline" buttons closer to the invite list. This might need some fiddling, but should be a little more human-friendly.
Reviewed By: chad
Maniphest Tasks: T11326
Differential Revision: https://secure.phabricator.com/D16339