Semi-patched Server Starting (NEEDS MORE WORK!!!)

- Lets beta testers log into servers, but has several issues still left to fully fix
- NOTE: Structure generation from resourcepacks doesn't work with servers as no access function exists
- NOTE: Cannot connect with non-registered clients (cracked or eclipse based)
- Fixed some issues with client-side commands being called by servers, causing crashes
- Fixes Issue #1150, but has more problems that need fixing