Remove AJAX requests core_message_get_unread_conversations_count and
message_popup_get_unread_popup_notification_count and
render the unread messages and notifications into mustache template.
I removed the additional tooltips because I think that they are just used
in the notifications and messages context and duplicate the all over used
title tag that gives the same information when hovering. So the whole system
stays more consistently.
cescobedo