CourseLocation: add message if no address

src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/components/CourseLocation.vue

@@ -10,6 +10,10 @@
             {{ error }}
          </div>
 
+         <div v-if="hasNoLocation" class="chill-no-data-statement">
+            {{ $t('courselocation.no_address') }}
+         </div>
+
          <show-address
             v-if="accompanyingCourse.location"
             :address="accompanyingCourse.location">
@@ -96,6 +100,9 @@ export default {
       isPersonLocation() {
          return this.accompanyingCourse.locationStatus === 'person';
       },
+      hasNoLocation() {
+         return this.accompanyingCourse.locationStatus === 'none';
+      },
       isContextEdit() {
          return this.context.edit;
       }