Git commits in Moodle 2.7.3 by Mark Nelson

commit 702e2eb195e0b8d38cd197e17afb7330755172ae
Author: Mark Nelson <markn@moodle.com>
Date:   Tue, 21 Oct 2014 10:43:47 +0800
Tag:    v2.7.3

MDL-47780 core: corrected docs for get_user_capability_course()

commit 9d4861fa7537ec0b89cfdcdf4e83473cad48a140
Author: Mark Nelson <markn@moodle.com>
Date:   Tue, 02 Sep 2014 12:46:43 +0800
Tag:    v2.7.3

MDL-46818 core_grades: added YUI form change validation