Make Stoneskin 2 instant cast

[thunderbreak]

SS2 is only a must have for coil/primals in 8 man missions. Most of the time you have Swiftcast ready once you wiped, I personnaly almost never have to cast it. When I have to, that's not a big deal, before you needed almost 30s to SS everyone xD

And 6s is nothing when your party must wait like 2 min after each wipe for their CD. In the end it's really changing nothing, above all for 4 man dungeons

So when you do cast SS before pulls, you cast them 1 by 1? Or you don't cast them at all?