Make upcoming events view more viewer-oriented
Summary:
Ref T11326. Try to make this a little more useful:
- Don't show entire attendee list (not useful?)
- Show host (useful?)
- Show your own status prominently (attending vs declined vs invited).
- Show cancelled events prominently.
Test Plan: {F1723550}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11326
Differential Revision: https://secure.phabricator.com/D16299