console controller no longer directly touches genes, except ducttape stuff which needs a makeover anyway.
added informative messages to console controller's load_folder method
fixed error in sequence.extract_cds; more status messages in consolecontroller.loadfolder
shell of gene.to_tbl
mrna.to_tbl added. nothing much to it, though.
added arg to cds/exon.to_tbl()
seq now adds first two lines of tbl entry