HM3: Text loading and intro screen live

The HeroMachine 3 Alpha has had a major upgrade, and now allows you to load or save characters as text strings to make emailing them back and forth easier.

I've also added a new "Intro" screen to make it easier for new folks to use, and faster for you as well by eliminating the need to load an item set before you can get to the load screen:

Hopefully that all makes sense ... I'm sure I'll be tweaking it as we go, but it's a good starting point for now. Let me know in comments if you have any issues with it, or suggestions on how to make it better, or a good recipe for bread pudding.