[fix] processors were buggy when user was not logged in
[enh] show red notifications if there are less than 5 unread notifications

So that the user does not get an empty menu
[enh] move notif counter so that we do not confuse wall with notifs
[add] new notification redirection system

PreNotifs now have an url. When viewed with notify.notifications_read(), the notification will become read and user will be redirected to the url
[add] telepathy now fires notifications with urls
Merge branch 'notifications' of https://github.com/C4ptainCrunch/beta402 into notifications
[fix] Notification should point to newly created thread
[add] Notification for new documents