Do not create phenodata.tsv if no group selected.
Do not create phenodata.tsv if no group selected.

wimvanderlinden/Rmodules,cdejonge/Rmodules,baumjamin/Rmodules,cdejonge/Rmodules,cdejonge/Rmodules,baumjamin/Rmodules,cdejonge/Rmodules,baumjamin/Rmodules,baumjamin/Rmodules,wimvanderlinden/Rmodules,wimvanderlinden/Rmodules,transmart/Rmodules,transmart/Rmodules,wimvanderlinden/Rmodules,transmart/Rmodules,transmart/Rmodules