Draw field on new webpage.

Change-Id: Ibf71aa126e51cb6a6110d890c13d0633fbc3087b
diff --git a/y2020/www/main.ts b/y2020/www/main.ts
index d414eac..e4c0f10 100644
--- a/y2020/www/main.ts
+++ b/y2020/www/main.ts
@@ -1,6 +1,7 @@
 import {Connection} from 'aos/network/www/proxy';
 
 import {ImageHandler} from './image_handler';
+import {FieldHandler} from './field_handler';
 
 const conn = new Connection();