Fixed some network crashes and block config problems

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

@@ -127,4 +127,9 @@ public class Packets {
     public static class BlockTapPacket{
         public int position;
     }
+
+    public static class BlockConfigPacket{
+        public int position;
+        public byte data;
+    }
 }

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

@@ -37,6 +37,7 @@ public class Registrator {
                 UpgradePacket.class,
                 WeaponSwitchPacket.class,
                 BlockTapPacket.class,
+                BlockConfigPacket.class,
 
                 Class.class,
                 byte[].class,