Fix order-dependent Jasmine failure due to missing translation key

There must be another Jasmine spec that modifies the locale without loading the default afterwards.

spec/javascripts/app/app_spec.js

@@ -1,4 +1,8 @@
 describe("app", function() {
+  beforeAll(function() {
+    Diaspora.I18n.load(spec.defaultLocale, "en");
+  });
+
   afterAll(function() {
     Backbone.history.stop();
     app.initialize();