Job Board: a begintermediate curriculum

I wrote a curriculum to bridge the gap between Suggestotron and the Intermediate message board curriculum. It features things such as:

* Error driven development, wherein the error is expressed via the browser
* Lots of emphasis on the request cycle, because that's my fave
* Discussions on each page instead of written explanations

There is much to improve, I bet! And probably at least one typo!

And if you just want to look at what it looks like instead of the code, I deployed my branch here: 
http://salty-meadow-2088.herokuapp.com/job-board/
That seems like a reasonable change, although I'm a bit weary, so maybe someone could do it after the PR has been accepted? I can't tell if that's weird or normal to request.