Fix EZP-23486: don't fallback to legacy on front-end preview
Merge pull request #1042 from joaoinacio/EZP-23486_sf_preview

Fix EZP-23486: don't fallback to legacy on front-end preview
Update LegacyResponseManagerTest.php

Comply to Symfony commit: https://github.com/symfony/symfony/commit/96e7b016023412970031ab1a60c51855a9e6304e
Added intial spec for eZ template (twig) helper functions
EZP-23317 Twig Helper to get field Definition name in a template

Closes #980
EZP-23317 Twig Helper to get field Definition description in a template
EZP-23317 Twig Helper to get generic translatable properties in a template
Add integration tests for ez_field_value(), ez_content_name(), ez_field_name() & ez_field_description twig function
Optimize ContentExtension->getFieldTypeIdentifier() to avoid uneeded loadContentType()