www/moodle40: Add new port

Repocopied from www/moodle311
Moodle is a course management system (CMS) - a free, Open Source software
package designed using sound pedagogical principles, to help educators
create effective online learning communities. You can use it on any
computer you have handy (including webhosts), yet it can scale from a
single-teacher site to a 40,000-student University.