Merge pull request #535 from saik0/redirect-root-if-empty-signed

Redirect to root on empty path (signed off)

modules/luci-base/luasrc/http.lua

@@ -208,6 +208,7 @@ function splice(fd, size)
 end
 
 function redirect(url)
+	if url == "" then url = "/" end
 	status(302, "Found")
 	header("Location", url)
 	close()