add maven batch mode

4 jobs for master in 3 minutes and 59 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Test
passed #1602
django

00:00:23

99.0%
passed #1603
selenium-test

00:00:56

 
  Staging
passed #1604
heroku-staging

00:01:14

 
  Production
passed #1605
heroku-production

00:01:25