minor Backstab improvement

[Atarlost]

Backstab triggers on "disabling conditions" but the list is missing some conditions that seem like they should be on it. Concussion is disabling in the same sense as silence and while it only comes from one talent, it's a talent belonging to a class that has Dirty Fighting as a locked tree. Another disable it doesn't apply on is sleep. Sleep is available from betraying the right escorts to zigur and is on a glove ego and is about the most helpless condition that exists. It's also missing iceblock, though that makes a sort of sense. I'm not sure whether spydric poison or frozen ground count as pin for its purposes or if flameshock counts as stun.

[ster]

at this point you might as well make it work on every negative status instead of just "pretty much all of them"

[Razakai]

Dirty Fighting is prob going to get a few tweaks - some of these will be taken into account.

[Atarlost]

at this point you might as well make it work on every negative status instead of just "pretty much all of them"

Probably not all of them. There are way too many different poisons and opening up more interactions with that tree than just possibly spydric if it counts as a pin would probably be too much. Right now, though, it seems designed to be too reliant on throwing knives/precise aim's specific list of conditions inflicted to get much out of it given that it appears on classes that don't have throwing knives.

I haven't played enough 1.5 to know who all it's still available to, but the previous version seemed to be a pretty common locked tree on stamina classes.