In case you don't want to setup local backend server (with api),
go to the source/api/js/api.js
file and change the 3rd line to:
var hostPrefix = '//users.mmcs.sfedu.ru:3001'
You need the gulp
tool to build project,
the node-static
webserver to host derived static files,
and all project dependencies to be installed:
$ npm i
$ sudo npm i -g gulp node-static
# run static server as background process
$ cd www; static &
# make gulp to look after files and build if smth changes
$ gulp watch