Do not try to sync deleted repositories
Output something about gerrit migration only if there is at least one gerrit repo
Try to update all repositoriess even when there is an issue with one of them

Change-Id: I1885bebc2e0ca543aef0dd1e2bddf322449e9435
Merge commit 'refs/changes/49/249/2' of http://gerrit.tuleap.net/tuleap into stable

* http://gerrit.tuleap.net/tuleap:
  Do not try to sync deleted repositories Output something about gerrit migration only if there is at least one gerrit repo Try to update all repositoriess even when there is an issue with one of them
This is Tuleap 5.10.99.9