Contract hash (Uint160) JSONification problem

[roman-khimov]

Ours (getapplicationlog):

{
   "jsonrpc" : "2.0",
   "id" : 1,
   "result" : {
      "txid" : "0x36b9839d6c4f2a873065c024ec99a216c8ad26d3937f803d51fac7a8276cd67e",
      "executions" : [
         {
            "gas_consumed" : "2.077",
            "trigger" : "Application",
            "contract" : "0x06895ada0ad6c685cfb11d59dd7e6eba429c0f5b",
            "vmstate" : "HALT",
            "notifications" : [],
            "stack" : [
               {
                  "value" : "",
                  "type" : "ByteArray"
               }
            ]
         }
      ]
   }
}

Theirs:

{
   "id" : 1,
   "jsonrpc" : "2.0",
   "result" : {
      "txid" : "0x36b9839d6c4f2a873065c024ec99a216c8ad26d3937f803d51fac7a8276cd67e",
      "executions" : [
         {
            "gas_consumed" : "2.077",
            "notifications" : [],
            "vmstate" : "HALT",
            "stack" : [
               {
                  "type" : "ByteArray",
                  "value" : ""
               }
            ],
            "trigger" : "Application",
            "contract" : "0x5b0f9c42ba6e7edd591db1cf85c6d60ada5a8906"
         }
      ]
   }
}

Notice that we're using different byte order for the contract field. I think that by default we should JSONify using LE (as C# does), but doing so breaks some other things at the moment, so we need to carefully go through them and decide which one should be the default and which one should be done manually when needed using some wrappers (basically minimizing the need for them).