[tx-robot] updated from transifex

apps/files/l10n/el.php

apps/files_encryption/l10n/cs_CZ.php

apps/files_encryption/l10n/de_DE.php

apps/files_encryption/l10n/pt_BR.php

apps/files_external/l10n/cs_CZ.php

apps/files_sharing/l10n/cs_CZ.php

apps/files_sharing/l10n/el.php

apps/files_trashbin/l10n/el.php

apps/files_versions/l10n/el.php

apps/user_webdavauth/l10n/el.php

core/l10n/el.php

core/l10n/zh_TW.php

l10n/ar/core.po

l10n/ar/files.po

l10n/ar/files_sharing.po

l10n/bg_BG/files.po

l10n/bg_BG/files_sharing.po

l10n/bn_BD/core.po

l10n/bn_BD/files.po

l10n/bn_BD/files_sharing.po