Author: Paul Holden
MDL-67338 message: re-implement block page type patterns.
The `page_type_list` method for the message component was deprecated
in 5b0769db as part of MDL-54744. However it is still required when
trying to configure blocks on any messaging pages.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ae097fe1f50ab543ef9ee9311d9cbd3c497e8976
http://github.com/moodle/moodle/commit/ae097fe1f50ab543ef9ee9311d9cbd3c497e8976
+ 3.10 en [page-message-x,core_message]