Squashed 'static/' changes from 2348866..59a7d16

59a7d16 fix route_lang_handler
13f465a upload vendor of underscore

git-subtree-dir: static
git-subtree-split: 59a7d1600b4997d612c17db09659055ec561265d
Merge commit 'a6c395c12effa728f8c07d4d0703421b44f09312'