Fix BUKKIT-2419: PlayerAbilities not being updated on teleport/respawn

Minecraft resets abilities based on what it knows client side, when someone dies and is in "survival," by default they should be in "survival." However, we allow modification of the PlayerAbilities, so we send this update out to the client.

Oh and, the format of the commit is like this to see if it looks any good. :)

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

@@ -395,6 +395,7 @@ public abstract class ServerConfigurationManagerAbstract {
         this.players.add(entityplayer1);
         // CraftBukkit start - added from changeDimension
         this.updateClient(entityplayer1); // CraftBukkit
+        entityplayer1.updateAbilities();
         Iterator iterator = entityplayer1.getEffects().iterator();
 
         while (iterator.hasNext()) {