[feature request] Links to filtered pages

There are some cases where we at bcn.convoca.la have found the need of more powerful api/querystring, to visit a gancio with filters already applied:

  • A social center that wants to link in their website to events that they host
  • Same thing but people organized around a tag (neighbourhood, topic, campaign/hashtag, etc)
  • Share a link to some friend: what do we do this weekend?

In general, it would be cool to be able to generate a link to any combination of filters :)