[tx-robot] updated from transifex

apps/files/l10n/cs_CZ.php

apps/files_encryption/l10n/pt_PT.php

apps/files_trashbin/l10n/cs_CZ.php

apps/files_trashbin/l10n/de.php

apps/files_trashbin/l10n/de_DE.php

apps/files_trashbin/l10n/es.php

apps/files_trashbin/l10n/fi_FI.php

apps/files_trashbin/l10n/it.php

apps/files_trashbin/l10n/pt_BR.php

apps/user_ldap/l10n/da.php

apps/user_webdavauth/l10n/cs_CZ.php

core/l10n/sl.php

l10n/af_ZA/core.po

l10n/af_ZA/files_sharing.po

l10n/af_ZA/lib.po

l10n/af_ZA/user_ldap.po

l10n/ar/core.po

l10n/ar/files.po

l10n/ar/files_sharing.po

l10n/ar/lib.po