save registrars in config
model: exception handling at stun setting
config: async config file writting
nologin command line as a model's property
main: internal documentation
config: dump only if file is loaded
main: run the app even if there's no config
config: validate the len of the data to save
controller: init doesn't return a boolean
config: display a warning if config parse fails
controller: save the config's file name