Fix: forgot some lib in shinken/dependencies & jenkins requirements.

For easier dev:
also renamed jenkins new_runtest with ext. and made a link to it.
Merge pull request #1367 from gst/missed_dependencies

Fix: forgot some lib in shinken/dependencies & jenkins requirements.
Fix: broker crash when sub process gt down and are not catch at the begining of the loop. fix #1350
Fix: tests: guessed Notification id could be another value if others tests files were previously run in the same session/process.

If you run this test with others in the same process,
like with: "nosetests -xv test_no_host_template.py test_notification_master.py",
then Notification.id may be != 12 ! (why not 42 ? :p)

Just mock Notification.__init__ (the only one we are interested here) and retain the newly created instances in a list.
The one we'll need should be the first (guessed_notif).