Author: Simey Lameze
MDL-26401 group: add delimiter and encoding fields to import
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b21f182106696817c65a8b360c6939df243c2ae1
http://github.com/moodle/moodle/commit/b21f182106696817c65a8b360c6939df243c2ae1
+ 3.9 en [csvdelimiter,core_group]
+ 3.9 en [encoding,core_group]