Miscellaneous fixes

[v15hv4]

[ cc admin view ]

• [x] clubs page doesn't autoreload after adding a club
• [x] events tab of new club has infinite loading indicator (it's querying the old REST /api/ endpoint)

[ club view ]

• [ ] edit details button doesn't do anything

[v15hv4]

• [x] don't show completed events on homepage slideshow
• [x] set minimum width for event view modal
• [ ] add close button somewhere on event view modal