Update the rules for which events get shown where to match expectations

[r-ferrier]

Fixes #2407

Description

The list of events we return for any given site is now updated to take in not only events whose location matches the site, but also any events belonging to partners on the site, even if they are happening outside the site's boundaries, and even if they have no address. I've updated the event resolver to support the import of address-less events.

I've also changed how we match events. We now take tags into consideration when we make the first query (some bits of the code were not doing this before leading to some inconsistencies on date filtering) and for tagged events, we specifically check for a partner match on name and address, against a list of approved partners.

I've written a mammoth test to support this, and updated lots of others to reflect the changes in logic.

[aaaaargZombies]

This LGTM thanks for writing the mega long tests, it helped follow what should be happening.

One thing I'm noticing is that it's hard to know what partner put on this event ("BSL heritage: poetry...") that has now been added

You can sort of figure it out from contact info. But overall I'm in favor of merging this in in given time left and this looks like really nice event that would have been obscured otherwise. Maybe this relates to showing owned event vs location of event. Might be worth ticketing if you think it's not covered by existing tickets.

[r-ferrier]

This LGTM thanks for writing the mega long tests, it helped follow what should be happening.

One thing I'm noticing is that it's hard to know what partner put on this event ("BSL heritage: poetry...") that has now been added

You can sort of figure it out from contact info. But overall I'm in favor of merging this in in given time left and this looks like really nice event that would have been obscured otherwise. Maybe this relates to showing owned event vs location of event. Might be worth ticketing if you think it's not covered by existing tickets.

yeah that is ticketed, just didn't have time to do it. Am tempted to try to squeeze it in as one last thing - it should be a simple addition if it's just on the event itself, and not the index