start add getting groups handle

http.go

@@ -322,3 +322,9 @@ func HttpHandleNewMessage(response http.ResponseWriter, request *http.Request) {
 	response.WriteHeader(http.StatusAccepted)
 	response.Write([]byte("sent"))
 }
+
+func HttpHandleGroupGet(response http.ResponseWriter, request *http.Request) {
+	if !isMethodAllowed(&response, request) {
+		return
+	}
+}