Authorize all teams to admin: fix 500 error on showing team page.

Created by: babatakao

500 error was occured in the following steps:

1. user1 creates new team "team1".
2. Assign team1 to project1.
3. Sign in as admin. This admin is not a member of team1.
4. Open project1 team setting page (/project1/team).
5. Click "team1" link in "Assigned teams" area.
6. 500 error.

Fixed this issue.

Created by: coveralls

Coverage decreased (-0%) when pulling 84bbb825d11ef4abecd24dbc3c401ce48d869a38 on babatakao:authorize_all_teams_to_admin into b9d989dc on gitlabhq:master.

By Administrator on 2013-06-05T05:56:03 (imported from GitLab project)

By Administrator on 2013-06-05T05:56:03 (imported from GitLab)

Created by: coveralls

Coverage decreased (-0%) when pulling 4b9225981c50a32137e14889ab316119bb0f2168 on babatakao:authorize_all_teams_to_admin into b9d989dc on gitlabhq:master.

By Administrator on 2013-06-05T06:22:59 (imported from GitLab project)

By Administrator on 2013-06-05T06:22:59 (imported from GitLab)

Created by: coveralls

Coverage decreased (-0%) when pulling 86a262de on babatakao:authorize_all_teams_to_admin into b9d989dc on gitlabhq:master.

By Administrator on 2013-06-05T06:58:30 (imported from GitLab project)

By Administrator on 2013-06-05T06:58:30 (imported from GitLab)

Created by: dzaporozhets

thank you

By Administrator on 2013-06-06T14:14:58 (imported from GitLab project)

By Administrator on 2013-06-06T14:14:58 (imported from GitLab)