transaction details dialog on doubleclick

gui/include/transactiondesc.h

@@ -0,0 +1,15 @@
+#ifndef TRANSACTIONDESC_H
+#define TRANSACTIONDESC_H
+
+#include <string>
+
+class CWalletTx;
+
+class TransactionDesc
+{
+public:
+    /* Provide human-readable extended HTML description of a transaction */
+    static std::string toHTML(CWalletTx &wtx);
+};
+
+#endif // TRANSACTIONDESC_H