go.tools/cmd/present: move jquery ui code into static

LGTM=adg
R=adg
CC=golang-codereviews
https://golang.org/cl/118760043

cmd/present/play.go

@@ -28,7 +28,7 @@ func playScript(root, transport string) {
 			buf.WriteString(s)
 			continue
 		}
-		b, err := ioutil.ReadFile(filepath.Join(root, "js", p))
+		b, err := ioutil.ReadFile(filepath.Join(root, "static", p))
 		if err != nil {
 			panic(err)
 		}