Improve search listing

[supermario]

It looks like we have more meetup groups now than the search listing shows, i.e. cannot find the new Elm Brazil group:

https://meetdown.app/search/brazil
https://meetdown.app/group/a3bb9a/Elm-Meetup-Brazil

So either we need to show more results, or actually implement search :D

[MartinSStewart]

There isn't a limit on the number of search results. The reason that group isn't appearing in the group search is because the owner has marked it as unlisted.

That said, I'll leave this issue open since improving the group search is still something that should eventually be done.