Make course optional on import
Add importer in admin
Use new trainer format in xls
Import trainers via admin interface
Add participant import
Update tests
Update url, handle error
Refactor importer
Add json field
Fix tests
Add update test
* Remove old assignment api REST code which is unused
* Refactor handling AssignmentCompletionStatus enum
* Add full test for GraphQL assignment completion mutation
* Hide wagtail INFO logs on local dev
Feature/VBV-339 assignment cypress test UNFINISHED
* Create assignment submission test data for cypress test
* Add first assignment trainer test
* Add first cypress test which checks DB entry with all instrumentation
Load and display AssignmentCompletionStatus
Datenmodell um Bewertungskriterien erweitern
Refactor assignment pages
Show user results
Update some data fields
Show user assignment evaluation
Changes after rebase
Rename `grading` -> `evaluation`
Add evaluation data to AssignmentCompletion
Refactor usage of `assignmentStore`
Store points for evaluation
Only debounce text
Show user responses on evaluation page
Feature/VBV-290 kn backend
* Add initial assignment completion model
* Add first version of `update_assignment_completion`
* Upgrade wagtail>=4 for new functions needed in assignment api
* Add API to update assignment user data
* Post API via assignment not learning_content
* Add GET api endpoints for AssignmentCompletion
* Add some initial assignment completion data
* Add admin view for AssignmentCompletion
Approved-by: Elia Bieri