Update i18n function to accept a third parameter, which is an array that describes the arguments in the string to make translation much easier
Update some of the config/admin pages to make sure i18n is properly used, and that argument descriptions are set
Update invitation system to keep track of the number that have been invited and not allow the school to invite more than they are allowed
Update the schools editor, to allow specifying the max number of projects and whether the max is total for the school, or per age category
Add required fields to the schools table
Update the config variable for special awards registration to allow turning special awards registration off