Crystalize Mana interface fix

Crystalize Mana is a very difficult to use spell. The fact that it's an
Area Enchantment song makes it conflict with other CM users, and it's
also easy for enemies to disrupt. It also takes a long time to fill a
crystal, and the whole process almost becomes not worth it.

This change will make Crystalize Mana into a mana-based equivalent of
Second Wind. Crystalize Mana will give its caster 100% of his max mana
when cast, but the spell can also trigger automatically at low mana for
the same effect. Triggered activations do not cost vigor or reagents.

Instead of giving 130% of max mana like current Crystalize Mana does,
the spell will instead add up to 20 base max mana exactly like how
Second Wind adds up to 20 base max vigor.

Crystalize Mana also no longer requires a lute, and cannot fizzle.

These changes are intended to remove the interface limitations of a
spell that was hampered by Jala song restrictions. At Level 6 in a
poorly filled out school, Crystalize Mana deserves to be simple,
awesome, and good at what it is supposed to do. This new design should
give it those qualities.