Adds text to notifications icons on header

app/views/devise/menu/_login_items.html.erb

@@ -1,6 +1,7 @@
 <% if user_signed_in? %>
   <li>
     <%= link_to notifications_path, class: "notifications", accesskey: "n" do %>
+      <span class="sr-only"><%= t("layouts.header.notifications") %></span>
       <% if current_user.notifications_count > 0 %>
         <span class="icon-circle" aria-hidden="true"></span>
         <span class="icon-notification" aria-hidden="true" title="<%= t('layouts.header.new_notifications', count: current_user.notifications_count).html_safe %>">

config/locales/en.yml

@@ -198,6 +198,7 @@ en:
       more_information: More information
       my_account_link: My account
       my_activity_link: My activity
+      notifications: Notifications
       new_notifications:
         one: You have a new notification
         other: You have %{count} new notifications

config/locales/es.yml

@@ -198,6 +198,7 @@ es:
       more_information: Más información
       my_account_link: Mi cuenta
       my_activity_link: Mi actividad
+      notifications: Notificaciones
       new_notifications:
         one: Tienes una nueva notificación
         other: Tienes %{count} notificaciones nuevas