Events: Date filtering workshop/discussion

[rcantin-w]

This ticket serves as a starting point for a conversation on date filtering, quite possibly for research to be done.
Sorting is not considered here, it is a separate issue.

Current offering:

1. Upcoming events
2. Past events
3. Catch-up events
4. What's on: Everything / Today / This weekend / By month

We already can match 3. Catch-up events with this link, but we need to match 1 and 2 by offering some sort of date filtering.

I'm not sure 4. What's on needs to be addressed with this as the What's On page shouldn't be replaced with search - we consider it more of a curated tool. So we'll focus on 1 and 2.

Do we just want a dropdown filter offering "Past" and "Upcoming" that defaults to "Upcoming"? Should we also offer "All" because it's in a search context?
What does the user want?

See Slack discussion

[rcantin-w]

Consider how this affects Exhibition date filtering as well as they will be in the same results page