fix most of vue warnings for accompanyingCourse component

src/Bundle/ChillMainBundle/Resources/public/vuejs/_components/OnTheFly.vue

@@ -81,13 +81,13 @@ export default {
             showModal: false,
             modalDialogClass: "modal-dialog-scrollable modal-xl"
          },
-         action: this.action
+         //action: this.action
       }
    },
    computed: {
-      action() {
-         return this.$data.action;
-      },
+      //action() {
+      //   return this.$data.action;
+      //},
       classAction() {
          switch (this.action) {
             case 'show':