Refactor plugin to make it fast refreshable

Summary: Refactored Navigation plugin to make it fast-refreshable: moved the main component into a separate file and exported all components as named functions. Without these changes every change of UI triggered full reload.

Reviewed By: timur-valiev

Differential Revision: D29814077

fbshipit-source-id: 5285bdc5f14a5163f9501c0d45a3affefb08fc8e

desktop/plugins/public/navigation/components/BookmarksSidebar.tsx

@@ -78,7 +78,7 @@ const alphabetizeBookmarkCompare = (b1: Bookmark, b2: Bookmark) => {
   return b1.uri < b2.uri ? -1 : b1.uri > b2.uri ? 1 : 0;
 };
 
-export default (props: Props) => {
+export function BookmarksSidebar(props: Props) {
   const {bookmarks, onNavigate, onRemove} = props;
   return (
     <DetailSidebar>
@@ -119,4 +119,4 @@ export default (props: Props) => {
       </Panel>
     </DetailSidebar>
   );
-};
+}