I'm fairly new to Jira, so you'll have to pardon my ignorance. We've been using Jira for about 5 months. When we first started, I was playing around, and I was able to merge the global and contextual sidebars on the left. I'm not sure what I did, but somehow, about two days ago, those two separated, and are now two separate side bars, which makes for a really unpleasant user experience. How can I merge them back together?