Issue #7: Issue #7: Refactor input validation code

Fixed bug with undefined provincial health card validator

guids-generator.html

@@ -265,7 +265,7 @@
         // Validate Health card number
         let validateHealthCard = (value, province, dob) => {
             // Use the province specific validator if available, otherwise default to the generic one
-            return HC_VALIDATOR[province](value, dob) || HC_VALIDATOR['CA'](value);
+            return (HC_VALIDATOR[province] || HC_VALIDATOR['CA'])(value, dob);
         }
 
         // For any line check previously enered lines that contains a <health card, province> pair