Recursively include submetas of submetas of metas (and so on) #309
Description
Right now, we only include metas that block the Bugzy epic. That goes for anything that involves metas, it all draws from the same source, the server-side query that fetches the metas list. Since metas are cached, it doesn't hurt to make this query a bit more robust. We can run it once to get all immediate metas, then run a query to search for submetas of those metas, then again to search for submetas of those submetas, until we get a response with 0 results.
This is already done (up to 1 level) in some views, but I'd like to do it everywhere since we now mark bugs as orange if they don't have a meta. Only, some bugs do have a meta, it's just not a level-1 meta. We want to count a bug as having a meta if it's part of a level 1 meta's tree. So if it blocks a meta that blocks a meta that blocks a meta that blocks the Bugzy epic, that means it has a meta, and it should be categorized under that level-1 meta (the meta at the top of the chain, the one that blocks the Bugzy epic).