Prettier, more structured HTML reports for tests.

This version of the HTML report includes information pulled out in a structured way including command-line, job standard error and standard output, failure reasons, etc... and has a much more modern look and feel thanks to bootstrap.

This replaces the HTML report generated by Galaxy and nose with one generated here in `planemo` using the structured data JSON reporting I [recently added to galaxy-central](https://bitbucket.org/galaxy/galaxy-central/commits/896c18ca6b2f1922f73fc74ba9f2bb6229fb54a1). It generates a single static HTML page with jquery and bootstrap embedded directly in the page as well as custom JavaScript code for parsing and displaying the structured data JSON.

Before and after screenshots at http://imgur.com/a/TZYJq.

![Before](http://i.imgur.com/Of73szp.png)

![After1](http://i.imgur.com/RKEYayN.png)

![After2](http://i.imgur.com/xPUBwnB.png)

![After3](http://i.imgur.com/oGPtmqb.png)