Update common.js with hasCookie
diff --git a/emfforms/public/javascripts/common.js b/emfforms/public/javascripts/common.js
index f81bde1..7a98cea 100644
--- a/emfforms/public/javascripts/common.js
+++ b/emfforms/public/javascripts/common.js
@@ -18,6 +18,10 @@
   return cookies;
 }
 
+function hasCookie(name) {
+  return getCookies(name).length > 0;
+}
+
 
 function createTimeline() {
   var twitterContainer = document.getElementById("twitter-container");