Draft: Resolve "Include class register in calendar dialog"

Closes #269

aleksis/apps/alsijil/frontend/components/injectables/lessonEventDialog/DocumentationForLessonEvent.vue

 <script>
-import lessonEventAdditionalCalendarActionMixin from "aleksis.apps.chronos/components/calendar_feeds/mixins/lessonEventAdditionalCalendarActionMixin.js";
+import lessonEventAdditionalDetailsMixin from "aleksis.apps.chronos/components/calendar_feeds/mixins/lessonEventAdditionalDetailsMixin.js";
 import { documentationsForLessonEvents } from "./documentations.graphql";
 import MobileFullscreenDialog from "aleksis.core/components/generic/dialogs/MobileFullscreenDialog.vue";
 import Documentation from "../../coursebook/documentation/Documentation.vue";
-import SecondaryActionButton from "aleksis.core/components/generic/buttons/SecondaryActionButton.vue";
 
 export default {
   name: "DocumentationForLessonEvent",
-  components: { Documentation, MobileFullscreenDialog, SecondaryActionButton },
-  mixins: [lessonEventAdditionalCalendarActionMixin],
+  components: { Documentation, MobileFullscreenDialog },
+  mixins: [lessonEventAdditionalDetailsMixin],
   apollo: {
     documentations: {
       query: documentationsForLessonEvents,
@@ -44,13 +43,22 @@ export default {
     max-width="500px"
     :persistent="dirty"
   >
-    <template #activator="{ on, attrs }">
-      <secondary-action-button
-        v-bind="attrs"
-        v-on="on"
-        icon-text="mdi-book-education-outline"
-        i18n-key="alsijil.coursebook.lesson_event_button"
-      />
+    <template #activator="activator">
+      <div>
+        <documentation
+          v-for="documentation in documentations"
+          :key="documentation.id"
+          compact
+          hide-info
+          :elevation="0"
+          :documentation="documentation"
+          :affected-query="$apollo.queries.documentations"
+          :dialog-activator="activator"
+          :extra-marks="extraMarks"
+          :absence-reasons="absenceReasons"
+          :subjects="subjects"
+        />
+      </div>
     </template>
     <div />
     <!-- dialog view -> deactivate dialog -->