Deep linking for tabs

Some pages have tabs. At least one page has multiple levels of tabs -- for instance on the page for an event, if you pick the jobs tab, there are pills for all the jobs (and pills are just another kind of tab), and then each of those jobs has tabs of its own -- so we're talking about three levels of tabs in total.

It would be nice if the context provided by your current tab selections weren't lost / reset whenever you refresh the page. It would also be useful if that context were preserved when sharing a link.

In light of all this, we should enable some sort of deep linking for all pages that have tabs.