* use one central unified log with channels/priorities ad-hoc listener registration and de-registration
* disable buffering by default
* add multi-threaded ringbuffer implementation
* use buffered listener for the gui (using the ringbuffer)
make precompiled header slimmer under Linux to increase CI and dev-machine build-times
make sure unused modules don't compile
add unused modules to the VS project to easier keep track of them
- Use Bind instead of connect. It's recommended for anyone using wx 2.9+
- Remove AppConnector. All this did was destroy objects used in the UI. However, wxWidgets handles this. So it's redundant.
- Misc other unimportant changes.
