Performance Update
I've improved the speed and performance, upgraded jquery and bootstrap libraries, and made some minor UI fixes again with recent changes. When loading and using the app, there should be a noticeable difference.
What makes it faster? Instead of toggling the visibility of individual elements on the page, it is now building the html in a JS variable and replacing the entire list html. This way the browser does less work overall. Comparing Chrome performance results, scripting and rendering time has been halved. Comparing Firefox performance results, Layout & DOM time/cost has been halved.