Author: Dan Poltawski
MDL-57432 environment: raise Moodle 3.4 requirements
1) PHP minimum version raised to 7.0.0
2) Intl extension raised from optional to required
http://git.moodle.org/gw?p=moodle.git;a=commit;h=43d1a8695c548df70e218a3648bd6797797b90a0
http://github.com/moodle/moodle/commit/43d1a8695c548df70e218a3648bd6797797b90a0
+ 3.1 en [intlrequired,core_admin]