Using python format function

[hyuunnn]

https://github.com/hyuunnn/Hyara/blob/master/hyara_lib/ui/settings.py#L200
https://github.com/hyuunnn/Hyara/blob/master/hyara_lib/ui/settings.py#L267
https://github.com/hyuunnn/Hyara/blob/master/hyara_lib/ui/settings.py#L273
https://github.com/hyuunnn/Hyara/blob/master/hyara_lib/ui/settings.py#L276