* Drop unsued iwdConfig option
* Add flag to enable caddy (default !lite)
* Add flag to enable vhost in caddy for help (default !lite)
* Add flag to enable vhost in caddy for cups (default printing.enable)
* Set defaults instead of a hard value to have individual options
overridable
Hibernation is now a core option:
```
pub-solar.core.hibernation.enable = true;
```
And there's a paranoia mode, that keeps the disk encrypted as much as
possible by enabling hibernation and removing the options for sleep,
screen locking.
Idle locking now hibernates, and it does it on very short notice.