AuraFilter: clean up
Auras: display debuffs that require a tank switch on the focus frame based on current encounter

TODO: Boss list is not complete
TODO: A disconnect during an encounter will result in an empty table
Stack size depends on difficulty and on tank/heal gear, so the numbers used are just a general recommendation
Auras: filter player buffs to only those casted by the player with some exceptions
Auras: don't sort player buffs
Auras: display boss debuffs on the target frame