tasks #7483: be able to edit git mirrors

Change-Id: I3d8720b1257a88df5a3ab93069fc06a6dbd8067b
Merge commit 'refs/changes/60/3060/7' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  tasks #7483: be able to edit git mirrors
This is Tuleap 7.5.99.30

Change-Id: I41cd49b1792dba8f1be8b886505637a3ae7472c9