Merge branch 'remove_serviceTest' into 'dev'

src/main/java/NTNU/IDATT1002/controllers/Login.java

src/main/java/NTNU/IDATT1002/controllers/SignUp.java

src/main/java/NTNU/IDATT1002/models/Login.java

src/main/java/NTNU/IDATT1002/repository/LoginRepository.java

src/main/java/NTNU/IDATT1002/service/UserService.java

src/main/resources/Images/Sequences/Login.png

src/main/resources/Images/Sequences/SignUp.png

src/main/resources/NTNU/IDATT1002/login.fxml

...t/java/NTNU/IDATT1002/repository/LoginRepositoryTest.java

src/test/java/NTNU/IDATT1002/service/UserServiceTest.java