Tag: Statuses list should show colour indicators

[sarahmonster]

It's not super clear from looking at this table which colours map to which statuses:

Using Tags instead of code in the "Status" column there would be an easy fix. We may need to use some kind of custom table component rather than a Markdown-formatted one here, since we'd need to pass it React components. I'd think some kind of generic VariableTable component (which could be used for all sorts of variables, like #94) and then we could have a more specific one, like TagStatusTable that was actually hooked up to all the data. Ideally this would be automatic, but I suppose it could also be manual, at least to start.