style
forgot height
fix previous bug in logo
style & img optimization
link style
link
surname, givenname, email are required
surname & givenname are required in /editinfo
student info in registry.ejs
few changes on messages
add placeholder on year number to remind about the format
validate {bachelor,master,doctor}Year with `^\d{4}$` and classNumber with `^\d{2}`
bugfix: User.create
bugfix: user[i]?.year may be String (from form) or Number (from mongodb)