FIlename is now remembered and used by save. Save as added.

PgsqlConn.h

@@ -46,6 +46,7 @@ namespace Pgsql {
 	public:
 		static ErrorDetails createErrorDetailsFromPGresult(const PGresult *res);
 
+		std::string errorMessage;
 		std::string state; ///< PG_DIAG_SQLSTATE Error code as listed in	https://www.postgresql.org/docs/9.5/static/errcodes-appendix.html
 		std::string severity;
 		std::string messagePrimary;