Possibility to add new selection rounds to an experiment

[PJpb]

A possible enhancement - it would be great if you could add/delete rounds from the selection experiment which is already parsed. Of course it would require some re-parsing of the new files and pool update, as well as deleting the cluster analysis (if it is not round-based). But it would be great not to reparse the millions of sequences which are already parsed :)

[rme1234]

agree, this would be a really helpful addition