Document how to include files in Drupal instead of include_once from global scope.
Make the HPC platform options checkboxes on the apply form as well as the node form.
Disable PDF generation because it takes 10  minutes.
Disable the multivalued fields so that submissions can save.  Currently these fields' values are lost.
Merge branch 'sprint2-fixes' of github.com:nesi/nesi-webportal into sprint2-fixes