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=1185717188ffc2d5d1807be32da4d9c1b6243e40
http://github.com/moodle/moodle/commit/1185717188ffc2d5d1807be32da4d9c1b6243e40
+ 3.3 en [intlrequired,core_admin]