Enable wildcards in redirect uri for oauth

Problem to solve

Gitlab OAuth provider can only have fixed redirect uri parameters.

Further details

I'm using gitlab as a OAuth provider for my app, but I can't redirect a user to the page they are coming from. I can only redirect them to a static site which I have to set as the redirect uri in my created application.

Proposal

Add wildcards to redirect_uri somewhere around here https://gitlab.com/gitlab-org/gitlab-ce/blob/master/config/initializers/doorkeeper.rb#L105

What does success look like, and how can we measure that?

Can users set wildcards in redirect uris and do they work.

Links / references

https://gitlab.com/gitlab-org/gitlab-ce/blob/master/config/initializers/doorkeeper.rb#L105