#477 filter per entity

[EDsCODE]

Addresses #477

Changes

• Minor: Remove unused showMaths property
• Add prop-filter component to entity filters
• add properties dict to entity object and filter by these properties by entity within _filter_events
• add symbols to prop filters

TODO:

• integrate with funnel
• update tests
• adjust UI? somewhat hectic right now

Checklist

• All querysets/queries filter by Team
• Code reviewed
• QA'd

[EDsCODE]

@timgl How do you think we should start displaying the entity specific information (DAU, properties)? The graphs and tables can get confusing if only the action/event is noted. The dau is easy as we can just add an extra bit to the labels, but the properties would be a lot of text to try to push into the label

[timgl]

@EDsCODE Reviewed, functionally works great!

Re: how to display this in the label, I think the key is actually not that important in this scenario.

• $pageview
  • $browser = firefox
  • utm_source = twitter

Should be displayed as $pageview (firefox; twitter), which I think conveys all the information you need.

Also this looks a little strange (partly b/c of super subtle border-radius that makes it look misaligned), but can leave for now.

[EDsCODE]

Don't want this to overextend so I added the symbols to all property filters and did an abbreviated property addition to the label. One concern is that adding a bunch of prop filters could result in a really long label. I opted for this anyway because for the moment I think it's sufficient. Can add a more comprehensive legend as needed. lmk!

[timgl]

I like the symbols!

If I select "does not equal" first, then go back to "= equal" it adds __null to the key which means nothing gets returned

[EDsCODE]

oof I checked out the problem because it seemed strange that any of my changes would affect how the filters are being processed and realized it was a bug on master too. Changed the null to 'exact' so the backend will pick it up directly in parsing and so we have consistent value for equality filter

[EDsCODE]

Ready for a look again! The failing test is the common one regarding paginate_query unrelated to this PR