Recurse Demo

[zephraph]

Work to do

• [x] Setup demo page
• [x] Build out demo web view that shows each user's http worker in an iframe
• [x] Write demo script to connect to the client
• [x] Setup backup script to populate workers that we build
• [x] Rework supervisor to be runnable remotely

[sbmsr]

• [x] on resubmit, replace old iframe
• [x] on enter, submit prompt
• [x] module system
• [x] spin down functions after no request received for n minutes