Made a mass of accessibility improvements

- Changed default focus styles
- Updated dropdowns with keyboard navigation
- Updated modals with esc exiting
- Added accessibility attirbutes where needed
- Made many more elements focusable
- Updated hover effects of many items to also apply when focused within

Related to #1320 and #1198

app/Http/Controllers/PageController.php

@@ -495,7 +495,7 @@ class PageController extends Controller
 
         $revision->delete();
         session()->flash('success', trans('entities.revision_delete_success'));
-        return view('pages.revisions', ['page' => $page, 'book' => $page->book, 'current' => $page]);
+        return redirect($page->getUrl('/revisions'));
     }
 
     /**