TIC #3111

app/controllers/courseware_controller.php

...s/JsonApi/Routes/Courseware/CoursewareInstancesUpdate.php

lib/classes/JsonApi/Routes/Courseware/UnitsCreate.php

lib/classes/JsonApi/Schemas/Courseware/Instance.php

lib/models/Courseware/Instance.php

lib/models/Courseware/Unit.php

...rces/assets/stylesheets/scss/courseware/layouts/tile.scss

resources/assets/stylesheets/scss/courseware/shelf.scss

...ssets/stylesheets/scss/courseware/structural-element.scss

resources/vue/components/StudipIdentImage.vue

...ents/courseware/blocks/CoursewareTableOfContentsBlock.vue

...rces/vue/components/courseware/layouts/CoursewareTile.vue

...s/courseware/structural-element/CoursewareRootContent.vue

...seware/structural-element/CoursewareStructuralElement.vue

...courseware/structural-element/CoursewareToolsContents.vue

...ents/courseware/structural-element/CoursewareTreeItem.vue

...e/components/courseware/unit/CoursewareShelfDialogAdd.vue

...ces/vue/components/courseware/unit/CoursewareUnitItem.vue

...onents/courseware/unit/CoursewareUnitItemDialogLayout.vue

...ents/courseware/unit/CoursewareUnitItemDialogSettings.vue