WarpPoint class has some issues with inheriting WorldPoint, because it introduces duplicate variables for position (Point.x and WarpPoint.xd, etc.).
This patch makes this class an independent from WorldPoint while maintaining all compability.
Removed rename which could cause problems with deserialization of old data.
Merge pull request #1126 from ForgeEssentials/feature/reorganized-warppoint

Cleaning up WarpPoint mess