Fix logging level
Adjustments to logging level
First draft of "local" notifier

- LocalNotifier uses the old python growl bindings to regrowl to a
local growl server (for older Growl versions)
- load_bridges() is a bit kludgy and will be rewritten later
- Does not yet support settings for the regrowl destinations
Simplfy logging options for now
Refactor common code into regrowl.regrowler