First rewrite step. Moved media to seperate field. Created indexed many-to-many relationship between slides and media
Fixed selecting media in slide creation.
Fixed paths for middleware
Issue #8599 by tuj: Fixed media selection
Issue #8599 by tuj: Fixed channel directive (not for videos).
Change channel creation templates.
Fixed issue with not being able to scroll after overlay was closed.
Issue #8506 by tuj: If the headline is not set after slide is selected, set headline = title
Added redirect to slide overview page if the requested slide does not exist
Issue #8595 by tuj: Moved created at to symfony instead of angular on creation.
Issue #8599 by tuj: Fixed issue where changing the order of slides in a channel, removed all slides.
Removed ChannelSlideOrder and MediaOrder from send to ES.
Issue #8619 by tuj: Added bulk loader for slides, channels, and screens. Added loadSlidesBulk function to slideFactory. Changed slideOverview controller to use bulk load.
Issue #8619 by tuj: Added bulk loading to channels overview and screens overview.
Merge branch 'development' of github.com:Indholdskanalen/indholdskanalen into development
Merge branch 'development' of github.com:Indholdskanalen/indholdskanalen into development
Merge branch 'feature/entity-rewrites' of github.com:Indholdskanalen/indholdskanalen into feature/entity-rewrites

Conflicts:
	src/Indholdskanalen/MainBundle/Controller/SlideController.php
	src/Indholdskanalen/MainBundle/Entity/MediaOrder.php
	src/Indholdskanalen/MainBundle/Entity/Slide.php
Issue #8619 by tuj: Refactored channel overview to use the bulk loader
Issue #8621 by turegjorup: Serializtion options on group level feature complete
Merge branch 'feature/entity-rewrites' of github.com:Indholdskanalen/indholdskanalen into feature/entity-rewrites

Conflicts:
	web/js/directives/channelDirectives.js