Author: David Mudrák
MDL-56181 lang: Fix CI and CZ country short names to match ISO 3166
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f0ffb7824d07e25030a53d927173644d1ba3465c
http://github.com/moodle/moodle/commit/f0ffb7824d07e25030a53d927173644d1ba3465c
+ 3.1 en [CI,core_countries]
+ 3.1 en [CZ,core_countries]