Update SonataUserBundle.de.xliff

Added missing German translations for deleting users and groups
Merge pull request #435 from ck-1/master

Update SonataUserBundle.de.xliff
Update SonataUserBundle.pl.xliff
Merge pull request #446 from axzx/patch-1

Update SonataUserBundle.pl.xliff
Fixing bug - can't remove some roles

Taking the data directly from the event fixed a bug where I couldn't remove a role from my user.
add tests
Merge pull request #452 from Renrhaf/patch-1

Fixing bug #423 - can't remove some roles
Update SonataUserBundle.pt_BR.xliff
Update SonataUserBundle.pt_BR.xliff
Merge pull request #453 from cassianotartari/patch-1

Update SonataUserBundle.pt_BR.xliff
improve catalan translation
Merge pull request #454 from davidromani/master

Improve catalan translation
improve catalan translation 2
Merge pull request #455 from davidromani/master

Improve catalan translation 2
Update SonataUserBundle.pt_BR.xliff
Merge pull request #458 from cassianotartari/patch-2

Update SonataUserBundle.pt_BR.xliff
support KnpMenu 2.0
Add Symfony v2.5 to travis
Merge pull request #460 from interstroom/master

Add Symfony v2.5 to travis
Added php 5.6 to .travis.yml