Courseware: Anordnen von Blöcken und Abschnitten vereinfachen

resources/assets/stylesheets/scss/courseware.scss

...ue/components/courseware/CoursewareAccordionContainer.vue

...rces/vue/components/courseware/CoursewareActionWidget.vue

...es/vue/components/courseware/CoursewareBlockadderItem.vue

.../vue/components/courseware/CoursewareContainerActions.vue

...rces/vue/components/courseware/CoursewareDefaultBlock.vue

.../vue/components/courseware/CoursewareDefaultContainer.vue

...ces/vue/components/courseware/CoursewareListContainer.vue

resources/vue/components/courseware/CoursewareRibbon.vue

...ces/vue/components/courseware/CoursewareRibbonToolbar.vue

...vue/components/courseware/CoursewareStructuralElement.vue

resources/vue/components/courseware/CoursewareTabs.vue

...ces/vue/components/courseware/CoursewareTabsContainer.vue

...s/vue/components/courseware/CoursewareToolsBlockadder.vue

resources/vue/mixins/courseware/container.js

resources/vue/store/courseware/courseware.module.js