Issue #8677 by turegjorup: Refactored serialisation to Middleware
Language fix by turegjorup: Changed english interface string to danish
Issue #8677 by turegjorup: Refactored serialisation to Middleware to use standard serialisation
Merge branch 'development' into feature/serialization-refactor

Conflicts:
	src/Application/Sonata/MediaBundle/Resources/config/serializer/SonataMedia/Model.Media.xml
	src/Indholdskanalen/MainBundle/Entity/Screen.php
Issue #8677 by turegjorup: Added custom serialisation to middleware for screens
Merge branch 'feature/serialization-refactor' into development

* feature/serialization-refactor:
  Issue #8677 by turegjorup: Added custom serialisation to middleware for screens
  Issue #8677 by turegjorup: Refactored serialisation to Middleware to use standard serialisation
  Language fix by turegjorup: Changed english interface string to danish
  Issue #8677 by turegjorup: Refactored serialisation to Middleware