Re-added sand, better teleporter/sorter UI

core/src/io/anuke/mindustry/net/Packets.java

@@ -108,4 +108,9 @@ public class Packets {
     public static class BlockUpdatePacket{
         public int health, position;
     }
+
+    public static class ChatPacket{
+        public String name;
+        public String text;
+    }
 }

core/src/io/anuke/mindustry/net/Registrator.java

@@ -33,6 +33,7 @@ public class Registrator {
                 BlockDestroyPacket.class,
                 ConnectPacket.class,
                 DisconnectPacket.class,
+                ChatPacket.class,
 
                 Class.class,
                 byte[].class,