Prepare for 2.6.0 release
Show maximum mana in Wand lore.
Some more lore tweaks.
Rename all the damage_reduction properties to protection.
Add stained_glass to the target_through materials.

This also adds 1.7 materials by name, which *might* cause errors in 1.6.
Change blob and blast to a new "pyramid" construction type

This also fixes hollow spheres at large radii.
Add boon and curse spells
Add "light" spell.