Merge branch 'gem-restructure' into 'master'

Gem restructure

Restructures how gems work.

Moved most of the gem color information for various talents into a table.
Now more amenable to adding new gem colors.
Tirakai's Maul can have gem interactions defined easier.
Goedalath Rock now gives golems shadowflame damage.
Shadowflame damage type now has a text color.
Gems show their 'latent damage type' on tooltips.