fix: Editing with document history open attempts to edit old revision

fix: Document history sidebar missing background
fix: 'Publish' action should not appear when viewing history of drafts
closes #1184

app/scenes/Document/KeyedDocument.js

@@ -9,7 +9,7 @@ class KeyedDocument extends React.Component<*> {
   }
 
   render() {
-    const { documentSlug } = this.props.match.params;
+    const { documentSlug, revisionId } = this.props.match.params;
 
     // the urlId portion of the url does not include the slugified title
     // we only want to force a re-mount of the document component when the
@@ -18,7 +18,7 @@ class KeyedDocument extends React.Component<*> {
     const urlParts = documentSlug ? documentSlug.split('-') : [];
     const urlId = urlParts.length ? urlParts[urlParts.length - 1] : undefined;
 
-    return <DataLoader key={urlId} {...this.props} />;
+    return <DataLoader key={[urlId, revisionId].join('/')} {...this.props} />;
   }
 }