feat: started to implement cheat resisting workRating

feat: workRating for peers are written to DB
feat: 2 new tables in DB

feat: creating Quizzes in the DB possible

It is necessary to hide the button if the comment text is to long

fix: path for quizzes done. almost assessment path done

before:
project-student.js --> givefeedback.jsp
now:
project-student.js --> annotation-document.jsp --> givefeedback.jsp