Application should more intelligently determine if a tab is currently selected

This is in reference to an already existing feature request, although I think it’s more of a bug. In the 4.x we didn’t have a problem using the URL webedit.brandeis.edu for Cascade, but in 5.x (at least 5.5.2) the page highlights the Edit tab when viewing the page.

People can still view and can still edit so it’s not the most critical bug, but it is fairly confusing for the UI and should be fixed.