[tx-robot] updated from transifex

apps/accessibility/l10n/el.js

apps/accessibility/l10n/el.json

apps/accessibility/l10n/is.js

apps/accessibility/l10n/is.json

apps/comments/l10n/zh_CN.js

apps/comments/l10n/zh_CN.json

apps/dav/l10n/de.js

apps/dav/l10n/de.json

apps/dav/l10n/de_DE.js

apps/dav/l10n/de_DE.json

apps/federatedfilesharing/l10n/is.js

apps/federatedfilesharing/l10n/is.json

apps/files/l10n/es.js

apps/files/l10n/es.json

apps/files_sharing/l10n/is.js

apps/files_sharing/l10n/is.json

apps/files_sharing/l10n/zh_CN.js

apps/files_sharing/l10n/zh_CN.json

apps/files_versions/l10n/zh_CN.js

apps/files_versions/l10n/zh_CN.json