Security: A lot of security fixes

htdocs/core/db/mssql.class.php

htdocs/core/db/mysql.class.php

htdocs/core/db/mysqli.class.php

htdocs/core/db/pgsql.class.php

htdocs/user/fiche.php

htdocs/user/index.php

htdocs/user/info.php

htdocs/user/note.php

htdocs/user/param_ihm.php

htdocs/user/perms.php