Resolve "submitForm is not defined in change role"

Closes #141 (closed)

src/main/resources/templates/person/change_role.html

@@ -42,7 +42,7 @@
                         type="button"
                         class="button p-less"
                         th:text="#{person.change_role}"
-                        th:onclick="|submitForm('change-role-${role.person.id}')|"></button>
+                        th:onclick="|document.getElementById('change-role-${role.person.id}').submit();|"></button>
                 </div>
             </div>
         </dialog>