Remove description for screen readers

It was being duplicated when restoring a page by using browser
history. With this solution we will avoid to have screen readers
descriptions more than once inside any sociual share button.

app/assets/javascripts/application.js

@@ -173,6 +173,7 @@ var destroy_non_idempotent_modules = function() {
   App.Datepicker.destroy();
   App.HTMLEditor.destroy();
   App.LegislationAnnotatable.destroy();
+  App.SocialShare.destroy();
 };
 
 $(document).on("turbolinks:load", initialize_modules);