Fix link shortening when not using subdomain

app.config['SERVER_NAME'] = app.config['site_domain']

@app.route('/favicon.ico')

@app.route('/favicon.ico', subdomain=app.config['subdomain'])

def favicon():

    return send_from_directory(os.path.join(app.root_path, 'static'),

                               'favicon.ico', mimetype='image/vnd.microsoft.icon')