SMN changes

[Len]

Positive
- Tri-disaster's recast timer is reset upon entering Dreadwyrm Trance.
- Demi-Bahamut's Ahk Morn is 680 potency (with damage falloff on multiple targets) and is also on a 13 recast timer.
- Dot consolidation: can you imagine having 5 buttons dedicated to just dot application? Nightmare.
- Enkindle's recast timer can be reduced by 10 seconds on a proc.

Negative
- Look, I get that there's potency nerfs for other jobs, too, but we already had mostly low potency spells! What the hell.
- Loss of both Contagion and Sustain.
- Shadowflare (now an instant cast) is on a 60 second recast timer.
- Bane damage falloff increased: potency reduced by 20% for the second enemy, 40% for the third, 60% for the fourth, and 80% for the fifth and beyond.
- Our major Stormblood addition (Summon Demi-Bahamut) is locked behind both Dreadwyrm Trance and by extension Aetherflow, which is on a 60 second cooldown.