Remove a Twig block that we don't need
Clean up the event card a little: move date to the rest of the meta data, improve the formatting of the date, and don't show the end date if it's a one-day conf
Tidy up the event page and make it nice, including:
- Splitting the event details and map into separate pages, including new methods in controller and new views (including view partials)
- Rename instances of "show" to "details"
Layout fix [JOINDIN-357]
Rebase PR #37 on master and update appropriately
Merge pull request #41 from akrabat/rebase-pr37

Rebase PR37