System event no more keeps running when repo is deleted

Change-Id: Ic0bdd17783da57e0042e046da1ddce137aee54f9
Remove garbage output when downloading files from git

The noheader parameter is not taken into account when we display the
toolbar.

This fix request #3276 - Garbage output when downloading files from git
service
This fix sla #3577 - Not able to unzip git codex snapshot

Change-Id: I427fc05f04a121794958ee24bf4ef8573aee7617
Merge commit 'refs/changes/39/539/2' of http://gerrit.tuleap.net/tuleap into tuleap-stable-master

* http://gerrit.tuleap.net/tuleap:
  System event no more keeps running when repo is deleted

Change-Id: I92c9031d20fc0e8656f35d30cc19dc3f313ac1eb
Tuleap 6.1.99.23

Change-Id: Ib69658ea5a5adaddfcca35738d543e8c99ef8cdb
Merge commit 'refs/changes/52/552/1' of http://gerrit.tuleap.net/tuleap into tuleap-stable-master

* http://gerrit.tuleap.net/tuleap:
  Remove garbage output when downloading files from git

Change-Id: Ie93b855d829aa072011bb109cf8141527e611be9
Tuleap 6.1.99.24

Change-Id: I1d71ea5019c9db765771df4663f72a991233823d