update_project_billable_attribute
Source:vignettes/update_project_billable_attribute.Rmd
      update_project_billable_attribute.Rmdupdate_project_billable_attribute identifies and new
projects that do not have the billable attribute set and
sets that attribute according to business rules. It marks projects as
billable once they are one month old. It marks projects as non-billable
if they are owned by the REDCap admin team.