Author: Pau Ferrer Ocaña
MDL-53791 mod_wiki: New Web Service new_page
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a6b6f0d2828e9c77008fa26ddbf62e0ad8ad597f
http://github.com/moodle/moodle/commit/a6b6f0d2828e9c77008fa26ddbf62e0ad8ad597f
+ 3.1 en [pageexists,mod_wiki]