Feature/module data (not ready for merge just yet)

Added a task to run the module data pull `php artisan moduledata`.

Note that I haven't yet put the programmes-plant-module call in composer.json yet, so you'll have to copy it in manually until we've opened up the repo.
Also, I've put a temporary fix for the autoload in tasks/moduledata.php, until the composer funcitonality is fully there.

We may want to work on improving moduledata.php a bit before merging, but for now it works.