request #7460: "Unresponsive script" error message when I turn on a field
and there're many field dependencies rules

Change-Id: Iac42e8ef19701d519b025941767e6ca6188a3ddf
Merge commit 'refs/changes/30/3030/2' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #7460: "Unresponsive script" error message when I turn on a field and there're many field dependencies rules
This is Tuleap 7.5.99.5

Change-Id: Id5b0699e02aeb92257728e26febb6dffb1f92cec