Ensure unique price list when inserting prices. Add deploy_mks script.

MarketData/MarketDataLib/DataAccess/PricingDA.cs

@@ -1499,6 +1499,7 @@ namespace MarketData.DataAccess
       try
       {
 				if(null==prices||0==prices.Count)return false;
+        prices = new Prices(prices.DistinctBy(x => new {x.Symbol, x.Date.Date}).ToList());   // ensure prices are distinct
         sqlConnection = SqlUtils.CreateMySqlConnection(MainDataSource.Instance.LocateDataSource("market_data"));
         sqlTransaction=sqlConnection.BeginTransaction(System.Data.IsolationLevel.ReadCommitted);
         DeletePrices(prices,sqlConnection,sqlTransaction);