Clean HTML code for Behat Test
Add .idea JetBrains extension in gitignore
Enabled Symfony 2.6 and 2.7 and disabled Symfony 3.x in travis
Merge pull request #2596 from hason/travis

Enabled Symfony 2.6 and 2.7 and disabled Symfony 3.x in travis
Merge pull request #2589 from Prims47/master

Clean HTML code for Behat Test
Merge remote-tracking branch 'sonata-project/master'