js: Add console polyfill

js/lib/console-polyfill.js

@@ -0,0 +1,27 @@
+/*jslint browser: true, plusplus: true */
+
+/**
+ * From
+ * http://skratchdot.com/2012/05/prevent-console-calls-from-throwing-errors/
+ */
+
+(function (window) {
+    'use strict';
+
+    var i = 0,
+        emptyFunction = function () {},
+        functionNames = [
+            'assert', 'clear', 'count', 'debug', 'dir',
+            'dirxml', 'error', 'exception', 'group', 'groupCollapsed',
+            'groupEnd', 'info', 'log', 'profile', 'profileEnd', 'table',
+            'time', 'timeEnd', 'timeStamp', 'trace', 'warn'
+        ];
+
+    // Make sure window.console exists
+    window.console = window.console || {};
+
+    // Make sure all functions exist
+    for (i = 0; i < functionNames.length; i++) {
+        window.console[functionNames[i]] = window.console[functionNames[i]] || emptyFunction;
+    }
+}(window));