Possibility to add different tracker urls

One project has various repos, forks, mirrors, issue tracker etc. This can result in one project having more than 50 trackers results from a single search. Again this is pure clutter.
Have teams and let teams have projects and these projects have trackers. So Gitlab (the project) could have github issues and gitlab issues (if available) tracked within one project instead of 2. Right now without additional information #533 #525 projects have to add Gitlab [Github] and Gitlab [Gitlab] manually to their trackers titel and add both of the trackers to their team.
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