an important commit

- add new query from store/database (getAllExamDate)
- new module vote.js to manage the proposal vote by the system with weight for validation
- new file for test create dinamically by the prof uploaded file (testExam3.js) I make this file with module fs and function append and readFile
- I give a behavior at delivery button and at the end of the timer
- new page correctionPanelProf.html where the prof can validate and verify the exam of a certain session
- add some behavior for html page with js file connect with them
- resolve the problem of the url compose by the escape of name and surname of a student
- manage the load of index.html page with hbs renderer and variable notProfessor
- validate maybe all field in javascript form (client side)
- now in the controlPanle prof, the professor can visualize who has delivery the exam in the actual session.
- the professor in correction page can also download the report in json file

for tomorrow: manage better, redirect method and maybe some interface of middleware page such as setup page.