Added new actions get/setPublisherArtist
Added new get/setPublisherArtist commands to interpreter
Added new publisherartist section to config.
Removed chart from publisher section
Added artist command routines to set which channels are to be shown.
Corrected format error with logger.debug.
Removed chart type from setPublisher command this has now moved to the setPublisherArtist command.
Removed chart type from getPublisher command this has now moved to the getPublisherArtist command.