Feature/jobboard

Pull request to integrate feature branch for the job board. It includes:
- zipfile of the job board plugin
- login in the theme to identify the plugin as recommended
- new "sidebar" region that only appears on job board pages
- less-powered CSS file loaded only on job board pages that includes minor CSS tweaks for improved appearance on mobile devices

There may be some responsive styling issues I missed in my clickthru, but I addressed the few issues I did see.

Ben