Validate javascript with es5 support set to true.

.jshint

@@ -4,5 +4,6 @@
 	"curly": true,
 	"forin": true,
 	"trailing": true,
-	"asi": true
+	"asi": true,
+	"es5": true
 }

static/js/services/contacts.js

@@ -86,7 +86,7 @@ define(['underscore', 'jquery', 'modernizr'], function(underscore, $, Modernizr)
 		var cursorRequest = store.openCursor(keyRange);
 		cursorRequest.onsuccess = function(event) {
 			var result = event.target.result;
-			if (!!result === false) {
+			if (!result) {
 				return;
 			}
 			//console.log("read data idb", result, event);