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.

config/locales/en/admin.yml

@@ -39,7 +39,7 @@ en:
           debates: Debates
           proposals: Proposals
           budgets: Participatory budgeting
-          more_info: More info page
+          help_page: Help page
         background_color: Background colour
         font_color: Font colour
       edit:

config/locales/es/admin.yml

@@ -37,7 +37,7 @@ es:
           debates: Debates
           proposals: Propuestas
           budgets: Presupuestos participativos
-          more_info: Página de más información
+          help_page: Página de ayuda
         background_color: Color de fondo
         font_color: Color del texto
       edit: