replace store by data() for OnTheFly creation in AddPersons component

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

@@ -70,12 +70,10 @@ export default {
          switch (this.radioType) {
             case 'person':
                return this.$refs.castPerson.$data.person;
-               //break;
             case 'thirdparty':
                return this.$refs.castThirdparty.$data.thirdparty;
-               //break;
             default:
-               throw 'error with entity';
+               throw Error('Invalid type of entity')
          }
       }
    }