Sometimes Travis takes screenshots like this: https://res.cloudinary.com/ezplatformtravis/image/upload/v1537862861/screenshots/vendor_ezsystems_ezplatform-admin-ui_features_contenttypefields_feature_28_d6yhqb.png

Which are not very useful.

Goal of this story:
review current Travis settings (Symfony env, Symfony debug) to see how it can be improved (changes to behat env might be required).