Optimize Healthcheck

[rayzilt]

Currently the healthcheck checks if clamd and freshclam are running through process management.
This does not guarantee that they are both doing there job.

Idea: Clamd creates a socket file, should be relatively easy to get some stats or 'Am I alive' status.
Freschclam on the other hand, the script could check how old the definitions are. If they are older then 24 hours, something went wrong.