- add param date to my query in mysql (like date%) and I change the skeleton of the query

- I use w3cvalidator ( module node fork by w3cjs) to validate with success html and css; of course I add this package into package.json

- for tomorrow I wanna try to validate also javascript perform by the student (try ESPRIMA package) and manage the TIMER by creating  a specialize modulo into lib folder.