GUACAMOLE-51: Require shift released and numlock active for keypad numerals.
GUACAMOLE-51: Require shift released and numlock active for keypad numerals.

mike-jumper/incubator-guacamole-server,apache/guacamole-server,mike-jumper/incubator-guacamole-server,glyptodon/guacamole-server,apache/guacamole-server,mike-jumper/incubator-guacamole-server,glyptodon/guacamole-server,apache/guacamole-server,mike-jumper/incubator-guacamole-server,glyptodon/guacamole-server