add controller and JSP functionality to allow user submit UserExamClosedQuestion and UserExamClosedAnswer(s)
still BO and validator are missing
add UserExam related functionality to solve UserExamClosedQuestion and mark UserExamClosedAnswers by user (BO and VO)
fix UserExamClosedAnswer changing hibernate configuration to make it possible to update user answer (which initial is false)
add UserExamClosedQuestion to mark user answer
add missing UserExamClosedQuestionRepository
add missing UserExamClosedQuestionRepositoryadd UserExamClosedQuestionValidator which will be used to verify subbmited UserExam question with answers
also add and include i18n  UserExamClosedQuestion
finalize functionality to submit UserExam question with answers
bind manually validator and BO execution
extend DTO object about method converting it to VO
add error function executed in case if something wrong happens in controller
finalize success method - when success should remove subbmited questionHeader
change questionHeaders into observable array
configure removing questionHeader to not just dissapear but fadeOut what looks better
add s in the of the metod name to mark that result is list not single object
add clock counting down time remain to the end of the exam
add validation that user is not subbmiting closed question after end of the exam