More compile fixes

- Re-removes Bukkit#getServerName - This was (hopefully?) only added back
  for Timings v2. It should be kept in that scope.

- Intend to let PlayerViewDistance API slip. Given the scope of the
  changes in this area it seems best to let this slip past initial
  release. It can be re-added when there is additional time to focus on it
  and the changed systems it relies on. If it is fixed prior to release
  this is implemented as a single shim patch that can be dropped.

Spigot-Server-Patches/Add-Heightmap-API.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Add Heightmap API
 
 
 diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
-index 1bec5beab4..9f4cf3f1b3 100644
+index 1bec5beab..9f4cf3f1b 100644
 --- a/src/main/java/net/minecraft/server/World.java
 +++ b/src/main/java/net/minecraft/server/World.java
 @@ -0,0 +0,0 @@ public abstract class World implements IIBlockAccess, GeneratorAccess, AutoClose
@@ -20,7 +20,7 @@ index 1bec5beab4..9f4cf3f1b3 100644
  
          if (i >= -30000000 && j >= -30000000 && i < 30000000 && j < 30000000) {
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
-index ed646bc9db..d2c3ea0dc3 100644
+index ed646bc9d..d2c3ea0dc 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
 @@ -0,0 +0,0 @@ public class CraftWorld implements World {