title: IntelliJ IDEA: Show containing folder in 'project' sidebar.
body: <p>I'm using IntelliJ IDEA 12.1.6., and I'm trying to figure out how to make a file's parent folder show in the 'project' sidebar when I open it. I'm pretty sure I had it set up that way in the past, but I can't find the relevant setting. I've tried googling to no avail. Any ideas?</p>