Feature/batch chapter download (#191)

* Add NavbarToolbar component for rendering items in toolbar through portal

* Refactor Manga screen, move chapters filtering to toolbar menu, cleanup ChapterOptions

* Fix warning

* Update layout of ChapterList and add selection for chapters, add batch download, move stuff around

* Add space to bookmark icon

* Clear actions when leaving source mangas page

* Move bookmark icon back inline and align it correctly with text

* Fixup MangaDetails buttons to update cache properly so buttons in manga menu are updated

* Move chapters filter to ChapterList

* Fixup error display overlapping with loaded content when revalidation fails

* Fixup spacing around ChapterList title

* Only show small progress if manga is loaded so there is not to many spinners

* Prevent title wrapping

* Add icon buttons to desktop sizes of manga toolbar menu

src/screens/Library.tsx

@@ -46,6 +46,10 @@ export default function Library() {
                 <UpdateChecker />
             </>,
         );
+        return () => {
+            setTitle('');
+            setAction(<></>);
+        };
     }, []);
 
     // a hack so MangaGrid doesn't stop working. I won't change it in case