Provide logging of informational messages for server modules

At present, there is precious little information on the server modules and their startup.

The scala sources have a logging framework in place, there seems to be little in the way of information being logged.

It would be very helpful if a server module could have some DEBUG information added to indicate:

• the phases it does through when starting and confirmation of whether or not it has started
• the configuration it is using and some basic details
• similar for shutdown