.sql file name support

[jdjohn555]

Unless user has kdb, should default to using .sql filenames.

[ryanhamilton]

            ServerConfig sc = connectionManager.getServer(queryManager.getSelectedServerName());
            if(openDocumentsModel.getSelectedDocument().getTitle().endsWith(".q")) {
                return "q";
            }
            return (sc != null && !sc.isKDB()) ? "sql" : "q";

[ryanhamilton]

Released.