liquid_feedback_frontend: 8259fb540324 model/setting

liquid_feedback_frontend

Improved installation instructions (mention python-pip package; deal with /usr/sbin/nologin on Ubuntu)

line source

1 SettingMap = mondelefant.new_class()

2 SettingMap.table = 'setting_map'

3 SettingMap.primary_key = { "key", "subkey" }