allow ember to specify jQuery version

- fix slight acceptance test bug

core/client/bower.json

@@ -11,7 +11,6 @@
     "Faker": "3.1.0",
     "fastclick": "1.0.6",
     "google-caja": "5669.0.0",
-    "jquery": "2.1.4",
     "jquery-deparam": "~0.5.0",
     "jquery-file-upload": "9.5.6",
     "jquery-ui": "1.11.4",

core/client/tests/acceptance/settings/navigation-test.js

@@ -117,7 +117,7 @@ describe('Acceptance: Settings - Navigation', function () {
                 ).to.equal(3);
 
                 expect(
-                    find('.gh-blognav-item:last .response:visible').length,
+                    find('.gh-blognav-item:last .error').length,
                     'number of invalid fields in new item'
                 ).to.equal(1);
             });