Set up Git, push to Heroku, and launch the app.

def deploy_sandbox_shared_setup(verbose=True, app=None, web_procs=1):
    """Set up Git, push to Heroku, and launch the app."""
    if verbose:
        out = None
    else:
        out = open(os.devnull, 'w')

    (id, tmp) = setup_experiment(debug=False, verbose=verbose, app=app)

    # Log in to Heroku if we aren't already.
    log("Making sure that you are logged in to Heroku.")
    ensure_heroku_logged_in()

    # Change to temporary directory.
    cwd = os.getcwd()
    os.chdir(tmp)

    # Commit Heroku-specific files to tmp folder's git repo.
    cmds = ["git init",
            "git add --all",
            'git commit -m "Experiment ' + id + '"']
    for cmd in cmds:
        subprocess.call(cmd, stdout=out, shell=True)
        time.sleep(0.5)

    # Load psiTurk configuration.
    config = PsiturkConfig()
    config.load_config()

    # Initialize the app on Heroku.
    log("Initializing app on Heroku...")
    subprocess.call(
        "heroku apps:create " + id +
        " --buildpack https://github.com/thenovices/heroku-buildpack-scipy",
        stdout=out,
        shell=True)

    database_size = config.get('Database Parameters', 'database_size')

    try:
        if config.getboolean('Easter eggs', 'whimsical'):
            whimsical = "true"
        else:
            whimsical = "false"
    except:
        whimsical = "false"

    # Set up postgres database and AWS/psiTurk environment variables.
    cmds = [
        "heroku addons:create heroku-postgresql:{}".format(database_size),

        "heroku pg:wait",

        "heroku addons:create rediscloud:250",

        "heroku addons:create papertrail",

        "heroku config:set HOST=" +
        id + ".herokuapp.com",

        "heroku config:set aws_access_key_id=" +
        config.get('AWS Access', 'aws_access_key_id'),

        "heroku config:set aws_secret_access_key=" +
        config.get('AWS Access', 'aws_secret_access_key'),

        "heroku config:set aws_region=" +
        config.get('AWS Access', 'aws_region'),

        "heroku config:set psiturk_access_key_id=" +
        config.get('psiTurk Access', 'psiturk_access_key_id'),

        "heroku config:set psiturk_secret_access_id=" +
        config.get('psiTurk Access', 'psiturk_secret_access_id'),

        "heroku config:set auto_recruit=" +
        config.get('Experiment Configuration', 'auto_recruit'),

        "heroku config:set wallace_email_username=" +
        config.get('Email Access', 'wallace_email_address'),

        "heroku config:set wallace_email_key=" +
        config.get('Email Access', 'wallace_email_password'),

        "heroku config:set heroku_email_address=" +
        config.get('Heroku Access', 'heroku_email_address'),

        "heroku config:set heroku_password=" +
        config.get('Heroku Access', 'heroku_password'),

        "heroku config:set whimsical=" + whimsical,
    ]
    for cmd in cmds:
        subprocess.call(cmd + " --app " + id, stdout=out, shell=True)

    # Set the notification URL in the cofig file to the notifications URL.
    config.set(
        "Server Parameters",
        "notification_url",
        "http://" + id + ".herokuapp.com/notifications")

    # Set the database URL in the config file to the newly generated one.
    log("Saving the URL of the postgres database...")
    db_url = subprocess.check_output(
        "heroku config:get DATABASE_URL --app " + id, shell=True)
    config.set("Database Parameters", "database_url", db_url.rstrip())
    subprocess.call("git add config.txt", stdout=out, shell=True),
    time.sleep(0.25)
    subprocess.call(
        'git commit -m "Save URLs for database and notifications"',
        stdout=out,
        shell=True)
    time.sleep(0.25)

    # Launch the Heroku app.
    log("Pushing code to Heroku...")
    subprocess.call("git push heroku HEAD:master", stdout=out,
                    stderr=out, shell=True)

    scale_up_dynos(id)

    time.sleep(8)

    # Launch the experiment.
    log("Launching the experiment on MTurk...")
    subprocess.call(
        'curl --data "" http://{}.herokuapp.com/launch'.format(id),
        shell=True)

    time.sleep(8)

    url = subprocess.check_output("heroku logs --app " + id + " | sort | " +
                                  "sed -n 's|.*URL:||p'", shell=True)

    log("URLs:")
    click.echo(url)

    # Return to the branch whence we came.
    os.chdir(cwd)

    log("Completed deployment of experiment " + id + ".")