Author: Dongsheng Cai
MDL-23636, fixed text when deleting or editing wiki comments
http://git.moodle.org/gw?p=moodle.git;a=commit;h=d6887efca03923961edeb6f7d35f2f1833de6318
http://github.com/moodle/moodle/commit/d6887efca03923961edeb6f7d35f2f1833de6318
+ 2.0 en [editingcomment,mod_wiki]