Author: Petr Skoda
MDL-28337 add parameters explanation in URL resource configuration
http://git.moodle.org/gw?p=moodle.git;a=commit;h=bdbb48efe944cf9de83cc9c0794dc7639218bc98
http://github.com/moodle/moodle/commit/bdbb48efe944cf9de83cc9c0794dc7639218bc98
+ 2.1 en [parameterinfo,mod_url]
+ 2.1 en [parametersheader_help,mod_url]