update Sandstorm files list

Author: zombiezen

.sandstorm/sandstorm-files.list

@@ -27,6 +27,7 @@ lib/x86_64-linux-gnu/libtinfo.so.5.9
 lib64/ld-linux-x86-64.so.2
 opt/app/.sandstorm/launcher.sh
 opt/app/js/entry.js
+opt/app/js/sandnav.js
 opt/app/sandpass
 opt/app/style.css
 opt/app/templates