Update to Forge 965. Fixed MFR world issues with plugins. Fixes #482, #475, #272

MinecraftForge/MinecraftForge@2f7ad51a025c5af5fca489489c34e7f30ecb15c2
MinecraftForge/FML@f1b3381e61fac1a0ae90f521223c6bc613eb4888

* Fixed NPE's when plugins tried to retrieve craftworld from entities in MFR proxy worlds.
These entities will now return overworld's craftworld as their default.