Author: Dani Palou
MDL-51935 wiki: Add missing strings in wiki
http://git.moodle.org/gw?p=moodle.git;a=commit;h=487f6471a01e71841d7d75eb0ce414770d344173
http://github.com/moodle/moodle/commit/487f6471a01e71841d7d75eb0ce414770d344173
+ 3.0 en [cannotcomparenewerversion,mod_wiki]
+ 3.0 en [incorrectpageid,mod_wiki]
+ 3.0 en [incorrectsubwikiid,mod_wiki]
+ 3.0 en [incorrectwikiid,mod_wiki]