Use Karma CLI, fix Exoskeleton support, use Hapi instead of Express

- Removed unnecessary lesshat bower component
- Added jake tasks for easily adding and removing Swag
- Bumped Chaplin down to ~1.0.0 for proper Exoskeleton support
- Added karma-cli as test dependency and removed karma fix jake task
- Swap out Express for Hapi for happier development (and no cookies)
- Fix a bug where mocha assets piped to app.css when test stuff installed
I'm assuming we set `publicPath` in the `brunch-config`?