Author: Marina Glancy
MDL-51803 core: reusable element for sorting lists
http://git.moodle.org/gw?p=moodle.git;a=commit;h=539cb25050a27e6bbcf63776bf23a03a351e29ad
http://github.com/moodle/moodle/commit/539cb25050a27e6bbcf63776bf23a03a351e29ad
+ 3.6 en [movecontentafter,core]
+ 3.6 en [movecontenttothetop,core]