Merge pull request #366 from cykus/master

Fixed messages in Resources/templates/CommonAdmin/NewAction/create.php.twig
Update composer.json
Update .travis.yml
Translation files updated: documentpicker
Document picker views added
Documentation updated: documentpicker
[Feature] Doctrine ODM document picker widget added
Merge pull request #367 from eymengunay/feature-documentpicker

[Feature] Doctrine ODM document picker added
Update Resources/views/Form/Collection/javascript.html.twig