SCRIPTS: Added Diffusion Job Ability, added Diffusion duration modifier to spells.
CORE/SQL: Added Diffusion AOE type.

SCRIPTS: Added Plasma Charge, corrected durations for a few BLU spells.
(Thank you Azno)
Merge branch 'master' of https://github.com/DarkstarProject/darkstar
Merge branch 'master' of https://github.com/DarkstarProject/darkstar