New Settings UI

• Added UI for settings configuration. No more user accessible config.ini file.
• Added ability to delay writing newly retrieved track info to the text file.
• Changed Start/Stop to Pause/Resume in the system tray menu. This allows the user to suspend writing of new track info.
• Added ability to show system notification when new track is detected. This can be turned on/off in settings. Default is 'off'.
• Code enhancements due to new functionality.

See Installation and Usage information