Author: Bas Brands
MDL-71691 core_availability: add show more link
http://git.moodle.org/gw?p=moodle.git;a=commit;h=70d86ac5704a4f893c051bf67270c4dd2b484d3b
http://github.com/moodle/moodle/commit/70d86ac5704a4f893c051bf67270c4dd2b484d3b
+ 4.0 en [showmore,core_availability]