Add more configuration to cookbook

Adds configuration to disable closing terminal window on clean exit (defaults to true)
Adds configuration to enable font updating (defaults to false)
Adds configuration to specify default_profile (defaults to 'Basic')
Adds configuration to specify remote font file url to allow others to use different fonts (defaults to Menlo 18 pt).
Overrides default update_font and default_profile settings in soloistrc to show full feature set.