Merge pull request #21 from ericf/get-started-server

Word-smith Get Started intro content
add and expose limits for columns and media queries

* Column limit set to 100, media query limit set to 20
* 400 status thrown if values are above this threshold
* Exposed these methods to the client via `app.start.utils`
update mq-observer partial to break out of the page/s `.content` box
decide on a type of quote :)
Simplify /start/ route and add proper error checking
Clean up shared /start/ templates