[tx-robot] updated from transifex

apps/dav/l10n/nl.js

apps/dav/l10n/nl.json

apps/encryption/l10n/sr.js

apps/encryption/l10n/sr.json

apps/sharebymail/l10n/el.js

apps/sharebymail/l10n/el.json

core/l10n/es.js

core/l10n/es.json

core/l10n/nl.js

core/l10n/nl.json

lib/l10n/es.js

lib/l10n/es.json

lib/l10n/nl.js

lib/l10n/nl.json

settings/l10n/es.js

settings/l10n/es.json