[idea/suggestion] Harbinger support traits

[BenaSPACE.6028]

This is mostly unrelated to the current scourge fiasco that's happening. I've been playing around with the idea of making harbinger a little more healer/support viable. 

Vial Viles: Reworked. Now provides all personal benefits to the elixir's splash radius. (Life force generation is not shared) 

Twisted Medicine: now shares the healing gained from Alchemic Vigor in an 600 AoE. Still converts Vitality to Concentration. 

Elixir of Bliss: Now also provides Aegis for 5 seconds to self in Pve only. 

Elixer of Ignorance: Now provides 2 stacks of Stability for 8 seconds on self in PvE only.