Add features for checking the "Active Tab" across various pages

features/steps/shared/active_tab.rb

@@ -0,0 +1,11 @@
+module SharedActiveTab
+  include Spinach::DSL
+
+  def ensure_active_main_tab(content)
+    page.find('ul.main_menu li.current').should have_content(content)
+  end
+
+  And 'no other main tabs should be active' do
+    page.should have_selector('ul.main_menu li.current', count: 1)
+  end
+end