Web: remove link to all jobs from the summary page

No longer necessary as there is a link at the top of the page.
Web: place the navigation bar at the very top

It is no longer inside the content block so that it does not
change position between the job list and other pages.  Simplified
CSS by removing the unnecessary div#nav block.
Web: correct formatting of CSS file
Web: correct layout of job_summary template
Web: make summary page state names clickable
PEP8: fix violations in test suite