Use variable for email regex

git-svn-id: https://svn.driver.research-infrastructures.eu/driver/dnet40/modules/uoa-services-library/trunk/ng-openaire-library/src/app@54445 d315682c-612b-4755-9ff5-7f18f6832af3

utils/email/validator.ts

@@ -18,7 +18,7 @@ export class Validator {
   }
 
   public static emailValidator(email: any): boolean {
-    if (email.match("^[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}$"))
+    if (email.match(this.regex))
         return true;
     else
         return false;