Author: Paul Holden
MDL-64675 mod_feedback: better detection of last page break element.
Inform user when a page break item cannot be added.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f83bba28b514ae9518b8cea48fae142fa61cdfda
http://github.com/moodle/moodle/commit/f83bba28b514ae9518b8cea48fae142fa61cdfda
+ 4.3 en [cannotcreatepagebreak,mod_feedback]