- 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)
- Add note about resetarting firewalld.
- Refactor checking for running configuration process.
- Fix error message being show as info message.
- Minor indentation fixes.