- adapted all modules to not use views.ConfigurationView anymore
- removed templates that are not needed anymore
- no more implicit 'enabled' and 'get_status' functions in __init__.py files
- (more coherent/explicit use of Django functionality)
- Enable/disable ntpd from this module. Since ntpd has implications on
anonymity.
- Implement NTP diagonstics from freedombox-setup.
- Eventually provide ability to set date & time of the system.
- Eventually move timezone configuration to this module.