Issue #8677 by turegjorup: Refactored seializationlistener for DI
Merge branch 'development' of github.com:Indholdskanalen/indholdskanalen into development

# By martinyde (3) and Jesper Kristensen (2)
# Via Jesper Kristensen (2) and martinyde (1)
* 'development' of github.com:Indholdskanalen/indholdskanalen:
  Issue #8560 by cableman: Ensured that search works for all types
  Issue #8560 by cableman: Added pager prototype to slides overview page
  Martin Yde - #8671, Added description for video setup
  Martin Yde - #8671, changed html for displaying videos
  Martin Yde - #8671, Added styling for displaying video
Issue #8677 by turegjorup: Changed 'all entity" methods to use serialiser
Merge branch 'development' of github.com:Indholdskanalen/indholdskanalen into development

# By martinyde
# Via martinyde
* 'development' of github.com:Indholdskanalen/indholdskanalen:
  Martin Yde - #8705, Changed Readme
  Added pdf
  Martin Yde - #8705, Added pdf of setup
  Martin Yde - #8705, Added Readme for templates
Merge branch 'development' of github.com:Indholdskanalen/indholdskanalen into development

# By martinyde
# Via martinyde
* 'development' of github.com:Indholdskanalen/indholdskanalen:
  Martin Yde - #8705, Changed Readme
  Martin Yde - #8705, Changed Readme