Changed email notification sender to mozilla.org (#256)
Revert to Mozmill 1.5.24
Revert "Changed email notification sender to mozilla.org (#256) because it breaks the jenkins patches"

This reverts commit 32e2db6ae96009ab4bc058a1e8fa25b342b51fca.
Re-enable Windows 8.1 machines (#327)
Improve documentation for new contributors (#323)
Upgrade to Jenkins 1.509.4 (#298)