Added support for fees in wallet send

server_extensions_api/src/com/generalbytes/batm/server/extensions/IWalletAdvanced.java

@@ -0,0 +1,10 @@
+package com.generalbytes.batm.server.extensions;
+
+import java.math.BigDecimal;
+
+/**
+ * Created by b00lean on 22.4.15.
+ */
+public interface IWalletAdvanced extends IWallet{
+    public String sendCoins(String destinationAddress, BigDecimal amount, BigDecimal fee ,String cryptoCurrency, String description); //returns txid
+}