Author: Paul Holden
MDL-73007 output: trigger form changechecker when switching tabs.
Co-authored-by: Odei Alba <odeialba@gmail.com>
http://git.moodle.org/gw?p=moodle.git;a=commit;h=0d3f58db0a09fed9bbcaaf0feeb099f819a1fc41
http://github.com/moodle/moodle/commit/0d3f58db0a09fed9bbcaaf0feeb099f819a1fc41
+ 4.0 en [changesmade,core]