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=29bbf948a379fe49494f905462d10f10fa878747
http://github.com/moodle/moodle/commit/29bbf948a379fe49494f905462d10f10fa878747
+ 3.4 en [intlrequired,core_admin]