#140654507 #13 improve testing and component for vacancy js consumer

assets/js/__test__/CompanyRegister-test.jsx

assets/js/__test__/components/Lowongan-test.jsx

assets/js/__test__/components/ModalAlert-test.jsx

assets/js/__test__/components/ModalPendaftaran-test.jsx

assets/js/__test__/components/Vacancy-test.jsx

assets/js/__test__/components/VacancyList-test.jsx

assets/js/__test__/lib/Server-test.jsx

assets/js/components/ModalAlert.jsx

assets/js/components/ModalPendaftaran.jsx

assets/js/components/Vacancy.jsx

assets/js/components/VacancyList.jsx