Add message to registration page dealing with countries of concern (#…

…1095)

Co-authored-by: Jake Rosenberg <[email protected]>

designsafe/apps/accounts/templates/designsafe/apps/accounts/register.html

@@ -26,6 +26,12 @@ <h3 class="text-center">
             to request an account.
             Once your account has been approved, you will then be able to log into DesignSafe.
           </h3>
+          <p>
+          For citizens of countries designated as “countries of concern” by United States government 
+          regulations, additional documentation in the form of a currently valid visa and passport will 
+          be requested after the account registration form has been submitted. Citizens of these countries 
+          are only eligible to have accounts while legally residing in the United States.
+        </p>
     </div>
   </div>