FRIENDLIST UPDATE

Needs summary.
 FRIENDLIST_UPDATE
==Payload==
None
==Details==
Fired when... 
* You log in 
* Open the friends window (twice) 
* Switch from the ignore list to the friend's list 
* Switch from the guild, raid, or who tab back to the friends tab (twice) 
* Add a friend 
* Remove a friend 
* Friend comes online 
* Friend goes offline