Fix banners in user pages

Banners were not been shown in certain pages; now
they are.

Spec to check if the banner is been shown correctly
added. Before it was in admins specs, now it has it's
own spec out of admins folder.

lib/tasks/web_sections.rake

@@ -5,6 +5,6 @@ namespace :web_sections do
     WebSection.create(name: 'debates')
     WebSection.create(name: 'proposals')
     WebSection.create(name: 'budgets')
-    WebSection.create(name: 'more_info')
+    WebSection.create(name: 'help_page')
   end
 end