Fixed static file embedding

handlers/static.go

@@ -42,10 +42,10 @@ func (f neuteredReaddirFile) Readdir(count int) ([]os.FileInfo, error) {
 
 // Handles requests for static files, without allowing access to the
 // directory viewer and returning 404 if an exact file is not found
-func HandleStatic() http.Handler {
+func HandleStatic(staticFS *http.FileSystem) http.Handler {
 	return http.HandlerFunc(
 		func(w http.ResponseWriter, r *http.Request) {
-			nfs := justFilesFilesystem{http.Dir("static")}
+			nfs := justFilesFilesystem{*staticFS}
 			fs := http.FileServer(nfs)
 			fs.ServeHTTP(w, r)
 		},