update frontend submodule

vangie · vangie · commit 5349d7b5d38c · 2016-09-19T10:56:01.000+08:00
diff --git a/frontend b/frontend
@@ -1 +1 @@
-Subproject commit 8667e1b095fa94825896a7c0f73eeae80c01b771
+Subproject commit 3305645ddee748411057f7f94c20dbbcf784a463
