5.1 SRD Update: 7th Level Spells

[Zanderaf]

Saved the 7th level 5.1 SRD spells for last because it has kind of the most weird changes (looking at delayed blast fireball).

• Icon updates for spells.
• More Active Effect to track ongoing stuff.
• More Activities for actions that don't consume spell slots and for different types of casting (Symbol now has all its possible effects)
• Spells should be much more useable (tracking failed/succeeded saves on Flesh to Stone as an example)

I've tried my best to make Delayed Blast Fireball work somewhat. I'm not fully sure how acceptable this change is, but it works from my testing. Whether or not this change is an affront to god, I have no idea (It probably is).

Related: #6727