GUACAMOLE-1174: Clarify behavior of URL parameter appending function.
GUACAMOLE-1174: Clarify behavior of URL parameter appending function.

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