Add icons to more of the servers.

These are not perfect, but better than using the default app icon. Feel
free to improve.

- DNS resolver: phonebook icon
- App-server: hand + app icon
- Keystore: key lock
- Launch daemon: croissant (to get the day started)
- Net server: hand + earth
- Package daemon: hand + package
- Power daemon: CF lightbulb

Add dns_resolver module

dns_resolver module provides a means for all kernel mode code to resolve
DNS hostnames.

Add dns_resolver module

dns_resolver module provides a means for all kernel mode code to resolve
DNS hostnames.