Debug complains about missing secret_key

[jinnatar]

Even if I use the new example config with my own secret_key without modifying anything else, --debug mode will print:

• Missing secret_key in your config file, your session will not survive server reboot

Not sure what's meant by session not surviving a reboot so can't test if it works or not.

[claudyus]

After this commit https://github.com/claudyus/LXC-Web-Panel/commit/9c015d6362df174dc08519ca435af9e483e27557 there is a new option in config file.

You should simple add a 'secret_key' in global section of config file. See the lwp.example.conf for reference.