0.3.93 Techtree Blacksmith upgrades language string names

[GunChleoc]

Shields level 1 and 2 both have upgrade_shield as their language name, but the variables in the language file and the prerequisites in the XML are called shield_level_1 and shield_level_2.

english.lng has blade_weapons and piercing_weapons as variables, but the XML has upgrade_blade_weapons and upgrade_piercing_weapons.

[John.d.h]

I looked through the language files, and I'm not sure where you're seeing the erroneous data.  Then again, you're using a somewhat old version and I'm building from the git repo, so maybe it was already fixed a while ago.

[GunChleoc]

I'm working on 0.3.93, which is the latest packaged release. I haven't managed to compile the source yet.