[tx-robot] updated from transifex

apps/comments/l10n/el.js

apps/comments/l10n/el.json

apps/comments/l10n/gl.js

apps/comments/l10n/gl.json

apps/dav/l10n/el.js

apps/dav/l10n/el.json

apps/federatedfilesharing/l10n/el.js

apps/federatedfilesharing/l10n/el.json

apps/files/l10n/el.js

apps/files/l10n/el.json

apps/files/l10n/is.js

apps/files/l10n/is.json

apps/files_external/l10n/ru.js

apps/files_external/l10n/ru.json

apps/files_sharing/l10n/el.js

apps/files_sharing/l10n/el.json

apps/files_sharing/l10n/is.js

apps/files_sharing/l10n/is.json

apps/oauth2/l10n/is.js

apps/oauth2/l10n/is.json