Author: Rajesh Taneja
MDL-40058 mod_wiki: Replaced add_to_log for page edit with event
http://git.moodle.org/gw?p=moodle.git;a=commit;h=fb92417b5e3555d111fbbcc709d3636ea56edc23
http://github.com/moodle/moodle/commit/fb92417b5e3555d111fbbcc709d3636ea56edc23
+ 2.7 en [eventpageupdated,mod_wiki]