Author: Marina Glancy
MDL-34859 forms: new element defaultcustom
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b4eb5f0212bdf6197c122b20ca491b13937e517f
http://github.com/moodle/moodle/commit/b4eb5f0212bdf6197c122b20ca491b13937e517f
+ 3.3 en [custom,core_form]
+ 3.3 en [default,core_form]
+ 3.3 en [newvaluefor,core_form]