Issue Description:

All "Dark Steel Upgrade" items have a tool tip that reads "Upgrade for Dark Steel items". It is a bit misleading:

• You can apply these upgrades to End Steel items as well
• You can't apply Empowered V upgrade to a Dark Steel item - only to the End Steel ones.

The last one was a source of much grief for me - I was hoping to upgrade my Ender to have "even moar powah", only to find out that I need to replace my sword with an End Steel one :)

Affected Versions (Do not use "latest"):

• EnderIO: 5.0.50
• EnderCore: 1.12.2-0.5.65
• Minecraft: 1.12.2
• Forge: 14.23.5.2838
• SpongeForge? no
• Optifine? no
• Single Player and/or Server? Server