Make the `/groups` route behave as expected
The route is supposed to redirect the Groups#index request based on whether or not a user was logged in. If they are, we redirect them to their groups dashboard; if they're not, we redirect them to the public Explore page.
But due to overly aggressive before_action
s that weren't excluding (or including) the
index
action, the request always resulted in a 404, whether a user was
logged in or not.
Closes #12660 (closed)