Fixed: Removed duplicate publishing of content type.
Implemented: Completion of content on basis of content type.
Implemented: Create update struct from content.
Fixed: Corrected languge code name.
Implemented: Updated of content on load.
Implemented: Fixup type IDs on content load after type update.
Updated: Renamed StorageFieldConverter -> FieldHandler.
Implemented: Inject Content\Gateway into FieldHandler.
Refactored: Made field update on load be triggered by field handler.
Fixed: Unified usage of fields fixture.
Implemented: Create type fixture with default values.
Implemented: Have 1 untranslatable field in type fixture.
Implemented: Removal of redundant fields on storage.
Implemented: Activated removal of redundant fields.
Refactored: Duplicate code into dedicated method.