Changed test Firebase to a production Firebase

This fixed an issue running the test suite in Firefox

Author: jacobawenger

package.json

@@ -50,7 +50,6 @@
     "karma-failed-reporter": "0.0.2",
     "karma-firefox-launcher": "^0.1.3",
     "karma-jasmine": "~0.2.0",
-    "karma-phantomjs-launcher": "~0.1.4",
     "karma-spec-reporter": "0.0.13",
     "streamqueue": "^0.1.1"
   },

tests/specs/common.spec.js

@@ -5,7 +5,7 @@
 jasmine.DEFAULT_TIMEOUT_INTERVAL = 5000;
 
 // Get a reference to a random demo Firebase
-var demoFirebaseUrl = "https://" + generateRandomString() + ".firebaseio-demo.com";
+var demoFirebaseUrl = "https://tests.firebaseio.com";
 
 // React test addon
 var ReactTestUtils = React.addons.TestUtils;