QuizBundle: Enable points saving and loading
QuizBundle: Add quiz name everywhere
QuizBundle: Update forgotten findAllFromQuiz to findByQuiz
QuizBundle: Add addTeam and addRound boxes to both teams and rounds
QuizBundle: Improve error handling; more user feedback
QuizBundle: Add flashmessage points loading
QuizBundle: tab- and arrow navigation in moderate screen
QuizBundle: Prevent DoS by tabkey and fix race condition