Command line args not given now default to 'unknown'.
Use css-stylesheet in HTML-part for colors.
Add macros for Basic HTTP authentification in the HTTP(S) services templates.
Add a basic rsync check template in the network/services pack.
Add commands for notification by XMPP (Jabber).
Add comments about work still to do (encoding, escaping).
Finished feature cleanup-sendmailservice.
Clean-up some comments.
Fix typo.
Use `raise SystemError` instead of calling sys.exit().
Clean-up: Remove unused import.
Convert comments into doc-strings.
Write json-file in text-mode (was binary-mode).
PEP 8 cleanup: wrap long lines.
Fix some error messages.
Finished feature cleanup-vmware-discovery-runner.
Fix: debug was always False.

Reason: The option is defined with `action=store_true`, so `opts.debug`
defaults to `False` and *never* is None.
Add long option `--debug`: same as short option `-d`.
Remove useless argument `dest` for OptionParser.

The `dest` defaults to the long option-name anyway.
Add long option `--hostname`: same as short option `-H`.