Cleaned up CraftBukkit comments in NMS.

Added newlines at the end of files
Fixed improper line endings on some files
Matched start - end comments
Added some missing comments for diffs
Fixed syntax on some spots
Minimized some diff
Removed some no longer used files
Added comment on some required files with no changes
Fixed imports of items used once
Added imports for items used more than once

src/main/java/net/minecraft/server/IDataManager.java

@@ -2,7 +2,6 @@ package net.minecraft.server;
 
 import java.io.File;
 import java.util.List;
-import java.util.UUID; // CraftBukkit
 
 public interface IDataManager {
 
@@ -22,5 +21,5 @@ public interface IDataManager {
 
     File getDataFile(String s);
 
-    UUID getUUID(); // CraftBukkit
+    java.util.UUID getUUID(); // CraftBukkit
 }