[tx-robot] updated from transifex

apps/files/l10n/hu_HU.php

apps/files/l10n/zh_TW.php

apps/files_encryption/l10n/cs_CZ.php

apps/files_encryption/l10n/el.php

apps/files_encryption/l10n/it.php

apps/files_encryption/l10n/ja_JP.php

apps/files_encryption/l10n/pt_PT.php

apps/files_encryption/l10n/th_TH.php

apps/files_sharing/l10n/sr.php

core/l10n/sr.php

l10n/cs_CZ/files_encryption.po

l10n/el/files_encryption.po

l10n/hu_HU/files.po

l10n/it/files_encryption.po

l10n/ja_JP/files_encryption.po

l10n/pt_PT/files_encryption.po

l10n/sr/core.po

l10n/sr/files_sharing.po

l10n/sr/lib.po

l10n/templates/core.pot