[EMF] Entity Model Features

RC-4

• axolotl tail part OptiFine part name mapping fixed
• removed now unnecessary config settings
• fixed emissive textures on CEM models acting weird in RC-3
• some minor optimizations and code cleanups
• moved animation execution code into the relevant parent bone to match OptiFine execution order (solved flickering models in inventory, and improved efficiency slightly)
• leaving the config screen now only triggers a resource reload if a setting has been changed