Refined Obsidian Armor Modifiers

[myriapoleis]

I have done some testing, and I have found that the duritae trait, when applied to construct's armory armor pieces, does not reduce the rate at which durability is lost. I hypothesize this is because the tool version of the modifer is used instead of the armor one. This may also be the case with the dense trait.

I know this isn't the main fork, but it would be a nice thing to have fixed.