Author: Adrian Greeve
MDL-55327 mod_lesson: Added the ability to duplicate pages.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=9f937c3bb3a66e4b3b4bcbb80a8fc9f433960658
http://github.com/moodle/moodle/commit/9f937c3bb3a66e4b3b4bcbb80a8fc9f433960658
+ 3.2 en [duplicatepagenamed,mod_lesson]