[tx-robot] updated from transifex

apps/dav/l10n/sr.js

apps/dav/l10n/sr.json

apps/dav/l10n/zh_CN.js

apps/dav/l10n/zh_CN.json

apps/encryption/l10n/ro.js

apps/encryption/l10n/ro.json

apps/files/l10n/af.js

apps/files/l10n/af.json

apps/files/l10n/ar.js

apps/files/l10n/ar.json

apps/files/l10n/bg.js

apps/files/l10n/bg.json

apps/files/l10n/ca.js

apps/files/l10n/ca.json

apps/files/l10n/cs.js

apps/files/l10n/cs.json

apps/files/l10n/da.js

apps/files/l10n/da.json

apps/files/l10n/de.js

apps/files/l10n/de.json