feat: Show diff when navigating revision history (#4069)

* tidy

* Add title to HTML export

* fix: Add compatability for documents without collab state

* Add HTML download option to UI

* docs

* fix nodes that required document to render

* Refactor to allow for styling of HTML export

* div>article for easier programatic content extraction

* Allow DocumentHelper to be used with Revisions

* Add revisions.diff endpoint, first version

* Allow arbitrary revisions to be compared

* test

* HTML driven revision viewer

* fix: Dark mode styles for document diffs

* Add revision restore button to header

* test

* Support RTL languages in revision history viewer

* fix: RTL support
Remove unneccessary API requests

* Prefetch revision data

* Animate history sidebar

* fix: Cannot toggle history from timestamp
fix: Animation on each revision click

* Clarify currently editing history item

app/scenes/Document/components/Editor.tsx

@@ -18,7 +18,6 @@ import EditableTitle from "./EditableTitle";
 
 type Props = Omit<EditorProps, "extensions"> & {
   onChangeTitle: (text: string) => void;
-  title: string;
   id: string;
   document: Document;
   isDraft: boolean;
@@ -41,7 +40,6 @@ function DocumentEditor(props: Props, ref: React.RefObject<any>) {
   const match = useRouteMatch();
   const {
     document,
-    title,
     onChangeTitle,
     isDraft,
     shareId,
@@ -82,7 +80,6 @@ function DocumentEditor(props: Props, ref: React.RefObject<any>) {
     <Flex auto column>
       <EditableTitle
         ref={titleRef}
-        value={title}
         readOnly={readOnly}
         document={document}
         onGoToNextInput={handleGoToNextInput}
@@ -107,7 +104,7 @@ function DocumentEditor(props: Props, ref: React.RefObject<any>) {
       )}
       <EditorComponent
         ref={ref}
-        autoFocus={!!title && !props.defaultValue}
+        autoFocus={!!document.title && !props.defaultValue}
         placeholder={t("Type '/' to insert, or start writing…")}
         scrollTo={window.location.hash}
         readOnly={readOnly}