Fix the i18n for 'This label %s does not exist'
Fix the i18n for 'This label %s does not exist'

uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/osis_louvain,uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/osis,uclouvain/osis,uclouvain/osis_louvain,uclouvain/osis_louvain