Remove some artefacts of machine translations

webadmin/translations/af_ZA.UTF-8.txt

webadmin/translations/ar_SA.UTF-8.txt

webadmin/translations/ca_ES.UTF-8.txt

webadmin/translations/cs_CZ.UTF-8.txt

webadmin/translations/da_DK.UTF-8.txt

webadmin/translations/el_GR.UTF-8.txt

webadmin/translations/es_ES.UTF-8.txt

webadmin/translations/eu_ES.UTF-8.txt

webadmin/translations/fi_FI.UTF-8.txt

webadmin/translations/fr_FR.UTF-8.txt

webadmin/translations/he_IL.utf8.txt

webadmin/translations/hi_IN.UTF-8.txt

webadmin/translations/is_IS.UTF-8.txt

webadmin/translations/it_IT.UTF-8.txt

webadmin/translations/ja_JP.UTF-8.txt

webadmin/translations/ko_KR.UTF-8.txt

webadmin/translations/nl_NL.UTF-8.txt

webadmin/translations/pl.UTF-8.txt

webadmin/translations/pt_PT.UTF-8.txt

webadmin/translations/ru_RU.UTF-8.txt