UI: Rok narození není povinný

bin/register-year

mo/users.py

mo/web/org_contest.py

mo/web/org_users.py

mo/web/table.py

mo/web/templates/doc_import.html

mo/web/templates/org_contest_add_user.html

mo/web/templates/org_contest_user.html

mo/web/templates/org_user.html

mo/web/templates/settings.html

mo/web/user.py