revert change made in 3b9097d4 - usernames MUST be UTF-8
revert change made in 3b9097d4 - usernames MUST be UTF-8

veroc/Bika-LIMS,rockfruit/bika.lims,anneline/Bika-LIMS,veroc/Bika-LIMS,veroc/Bika-LIMS,DeBortoliWines/Bika-LIMS,rockfruit/bika.lims,labsanmartin/Bika-LIMS,DeBortoliWines/Bika-LIMS,labsanmartin/Bika-LIMS,DeBortoliWines/Bika-LIMS,labsanmartin/Bika-LIMS,anneline/Bika-LIMS,anneline/Bika-LIMS