[Thermal Expansion] - Servo crafting with several metals

Enabled pneumatic servo crafting with bronze, invar, silver and steel
Added CreeperCollateral
Updated AE2 to rv1.beta build 20
Added Tinkeres Steelworks
Updated Builcraft to 6.0.18
Updated Iguanas Tinker Tweaks to 2.0.3
Added EnderIO
Merge branch 'master' of https://github.com/ctrlesc40/CtrlEscConfigPack