1.6b6 predator

predator: kill limit is constant and increased to 50.  
predator: atk and apr bonuses scaling modified to reflect constant kill limit.  
predator: hate on hit removed.  
predator: atk and apr bonuses shown on actor tooltip, instead of killcount.  
savage hunter: rng to apply effect.  
shrouded hunter: Crit shrug replaced with physpower for a less rng bonus and to provide a more offensive feel.

See merge request !561

Reorganized Water & Ice trees and buffed the early spells

1.6b4 typos n misc

fixed sunburst tgts.  
fixed lightning breath to actually rng.avg dam.  
added average dam to tooltips of some rng.avg lightning sills.  
curse of nightmare particles more transparent.   
fixed typos.  

See merge request !560

This reverts commit dbe75234.