When user starts kportal for the first time, and there is no config file,
kportal should create an empty config file with default values and empty
forwarding rules, so that user can easily edit the config file and add their
own rules.
* Fix enter misbehaving.
* Cleanup after previous tui implementation.
* Fix race condition and improve logging
* Add filtering of the namespaces by text input in the wizard UI
lukaszraczylo