Author: Ruslan Kabalin
MDL-32009 messaging: Add message processor uninstall functionality
http://git.moodle.org/gw?p=moodle.git;a=commit;h=0210ce10077f10fb0f92e4a0b50758e943eb838f
http://github.com/moodle/moodle/commit/0210ce10077f10fb0f92e4a0b50758e943eb838f
+ 2.3 en [processordeleteconfirm,core_message]
+ 2.3 en [processordeletefiles,core_message]