Added console() method to Logger

This method works like the other ones except will print at any log
level and doesn't show the timestamp, devie id or log level.  Applied
it in a couple of places.
Merge branch 'ArduinoDue' of git://github.com/cgalpin/GEVCU

Conflicts:
	MotorController.cpp
	SerialConsole.cpp

SerialConsole.CPP was so different between the GIT and merged version that I had
to revert and try my best to recreate the changes. Hopefully all is well.