Fix link to owner of group and team in admin interface

Created by: jojosch

The links to the owner of a group / team in the admin interface at [group/team]/index looks like this:

https://[Gitlab_Domain]/admin/users/1

and result in a 404.

Now they look like this https://[Gitlab_Domain]/admin/users/jojosch

Created by: Razer6

The link to the assigned people for merge requests and issues have the same issue. There is a 500 when clicking on them: http://demo.gitlabhq.com/gitlab/gitlabhq/team_members/8 which should be http://demo.gitlabhq.com/gitlab/gitlabhq/team_members/jsmith

and http://demo.gitlabhq.com/gitlab/gitlabhq/team_members/5 which should be http://demo.gitlabhq.com/gitlab/gitlabhq/team_members/root

By Administrator on 2013-02-17T11:05:18 (imported from GitLab project)

By Administrator on 2013-02-17T11:05:18 (imported from GitLab)

Created by: jojosch

On master@9764ba6d and 4-2-stable@e5080755 the link to the assigned person (and creator) in a merge request and issue works fine and contains the username instead of the id.

By Administrator on 2013-02-17T11:49:14 (imported from GitLab project)

By Administrator on 2013-02-17T11:49:14 (imported from GitLab)

Created by: dzaporozhets

thank you

By Administrator on 2013-02-17T14:15:30 (imported from GitLab project)

By Administrator on 2013-02-17T14:15:30 (imported from GitLab)

Created by: arabek

This needs to be backported to 4.2

By Administrator on 2013-03-07T09:40:08 (imported from GitLab project)

By Administrator on 2013-03-07T09:40:08 (imported from GitLab)