fix: path for quizzes done. almost assessment path done

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

feat: footer with progress bar on project-student

feat: db reworked for quizzes.

feat: jsp pages are utf-8 encoded now

fix: userToken was not written to url during login

html mutates to jsp step by step. first step

page: annotation_document.html
url: http://localhost:8080/pages/annotation_document.html

fix: post request works in /calculate and Grades was exchanged by ArrayList(Grading), whoop uhm.. whoop!

refactoring: simplified package structure (no servlet/tag folders needed)
documentation: added some comments to the service classes

refactor: used jersey seeOther method for redirect instead

feat: implemented Servlet Filter (for all pages in /pages/ user is redirected to login if he is not authorized)
feat: implemented TagLib for hidden fields (showing the user name based on token in url)
feat: copied styles from groupfinding project