- Fix PropTypes warning on EditDocument.js when failing to pass a doc prop.

- Improve 404 handling on EditDocument.js and ViewDocument.js when no doc prop is passed.

imports/ui/pages/EditDocument/EditDocument.js

@@ -13,8 +13,12 @@ const EditDocument = ({ doc, history }) => (doc ? (
   </div>
 ) : <NotFound />);
 
+EditDocument.defaultProps = {
+  doc: null,
+};
+
 EditDocument.propTypes = {
-  doc: PropTypes.object.isRequired,
+  doc: PropTypes.object,
   history: PropTypes.object.isRequired,
 };