fetch currentVersion in all agendapoint subroutes

a parent route is not reloaded when switching between child routes, since we
loaded currentVersion there this could become outdated after a save. This in
turn caused unexpected behaviour when switching between subroutes (e.g.
revisions and edit), where either fewer revisions were shown than actually
existed or an older version of the document was shown when returning to the edit route

app/routes/agendapoints.js

@@ -1,4 +1,3 @@
-import RSVP from 'rsvp';
 import { action } from '@ember/object';
 import Route from '@ember/routing/route';
 import { inject as service } from '@ember/service';
@@ -22,11 +21,10 @@ export default class AgendapointsRoute extends Route {
       { include: 'status' }
     );
 
-    return RSVP.hash({
+    return {
       documentContainer: container,
-      editorDocument: await container.get('currentVersion'),
       returnToMeeting: params.returnToMeeting,
-    });
+    };
   }
 
   @action

app/routes/agendapoints/attachments.js

@@ -5,8 +5,9 @@ export default class AgendapointsAttachmentsRoute extends Route {
   @service documentService;
 
   async model() {
-    const { documentContainer, editorDocument, returnToMeeting } =
+    const { documentContainer, returnToMeeting } =
       this.modelFor('agendapoints');
+    const editorDocument = await documentContainer.currentVersion;
     const decisions = this.documentService.getDecisions(editorDocument);
     return {
       documentContainer,

app/routes/agendapoints/edit.js

@@ -14,7 +14,11 @@ export default class AgendapointsEditRoute extends Route {
   }
 
   async model() {
-    return this.modelFor('agendapoints');
+    const { documentContainer } = this.modelFor('agendapoints');
+    return {
+      documentContainer,
+      editorDocument: await documentContainer.get('currentVersion'),
+    };
   }
 
   setupController(controller, model) {

app/routes/agendapoints/revisions.js

@@ -9,8 +9,8 @@ export default class AgendapointsRevisionsRoute extends Route {
 
   async model() {
     const { documentContainer, returnToMeeting } =
-          this.modelFor('agendapoints');
-    const editorDocument = await this.documentContainer.currentVersion;
+      this.modelFor('agendapoints');
+    const editorDocument = await documentContainer.currentVersion;
     return RSVP.hash({
       revisions: this.fetchRevisions.perform(editorDocument),
       documentContainer,