[tx-robot] updated from transifex

apps/files/l10n/zh_CN.php

apps/files_encryption/l10n/ta_LK.php

apps/user_webdavauth/l10n/ta_LK.php

apps/user_webdavauth/l10n/zh_CN.php

core/l10n/de.php

core/l10n/de_DE.php

core/l10n/es.php

l10n/de/core.po

l10n/de/lib.po

l10n/de_DE/core.po

l10n/de_DE/lib.po

l10n/es/core.po

l10n/es/lib.po

l10n/ta_LK/files_encryption.po

l10n/ta_LK/settings.po

l10n/ta_LK/user_webdavauth.po

l10n/templates/core.pot

l10n/templates/files.pot

l10n/templates/files_encryption.pot

l10n/templates/files_external.pot