Mainresponder Enhancements

Mainresponder allows its behaviour to be modified through callbacks, controlpanel addns and more.

• Callbacks - see config.mainresponder.callbacks.
• Controlpanel addins - add "panels" to the webbrowser controlpanel
• Globals table - scripts within config.mainresponer.globals can affect responses from mainresponder

Some of my efforts in this area are accessible through the menu on the left.