Resolve "event registration information grouping"
Use cases for event registration information on events page
- There are new use cases for the event registration information given
in the front matter of a event page:
- Registration link is given but no registration period.
- Waiting list link is given but no registration period.
- Fixed a bug in a conditional statement that prevented the event registration badges to be displayed in the event data header.
- TODO: Refine appearance of event registration badges now that they are displayed.
Closes #180 (closed)