Starting the switch to Teacup.

* app.litcoffee
  - Make Teacup the view engine.
  - Tell it where assets are kept.
  - Refactor the CDN utilities for use with Teacup.

* app/public/js/controllers/signupController.litcoffee
* app/server/router.litcoffee
* app/server/modules/account-manager.litcoffee
  - Use "username," not "user."

* app/server/views/404.coffee
  - New 404 template.

* app/server/views/layout.coffee
  - New layout template.

* app/server/views/signup.coffee
  - New signup template.

* app/server/views/utils.coffee
  - Template utils.

* package.json
  - Add Teacup, pointing to my hacked version for now.
Nice debugging tool.
Fix minor nit.
Mid-way through converting login to coffee.
Rename instances where "user" means username to "username"
And "pass" to "password."

Do some template refactoring that I'll later throw away.
More tweaks.

Username, not user.

Add clear-on-input to password field.
Remove vestiges of bootstrap and jquery
Update README a bit.
More removal.
Remove unused method.

If I want to do this, I'll fire up Mongo and type in db.accounts.remove()
Initial go at a user config structure.
More removal of old stuf.
Ignore npm-debug.log.