Add group to group / project
This would make it easier to organise large groups of users in GitLab.
E.g. I'd make a group 'GitLab devs' that I would then just add as masters to the gitlab-com project, a group 'GitLab marketing' that I'd give dev permission, etc.
Add group to project would simply work as the current 'share with group' feature.
@sytses @dzaporozhets what do you think?