`status_only: true` does not seem to be used anywhere
In https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/views/projects/issues/_discussion.html.haml#L3-4 and in https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/views/projects/issues/show.html.haml#L35-49 we're setting status_only: true
but it seems we don't use this param anywhere in the codebase afterward...
We should get rid of status_only: true
.