Author: Marina Glancy
MDL-64554 core_form: new API for modal forms
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1d33351fbb1b27c8792ed5a492e596cdfb72d5cf
http://github.com/moodle/moodle/commit/1d33351fbb1b27c8792ed5a492e596cdfb72d5cf
+ 3.11 en [nopermissionform,core_form]