Missing translations in h5peditor-metadata-author-widget.js

[rezeau]

In h5peditor-metadata-author-widget.js line 134 "html: author.role" ought to provide a translation, something like "html: H5PEditor.t('core', 'author.role')"
And of course the following strings should be added to the editor language files: "Author", "Editor", "Licensee" and "Originator".

[rezeau]

Another missing translation: in file h5p-editor\scripts\h5peditor-metadata.js it says:
label: 'Additional information', // TODO: l10n ?
this label should be translatable