If you would like to take this dashboard to the next level, it's very easy with glitch. There is a button in the lower righthand corner labeled Remix with Glitch. Clicking that button will create a copy of the dashboard project in your own glitch account that you can modify to your liking.
In the code, you will find an object that defines the boards with a few different options. Adding a new board is pretty easy with just a few options such as the number of NeoPixels, the color order for NeoPixels and whether it has a switch.
Adding new panels is similar to adding a new board, but there are a few more options. If you want to use one of the existing panel types, all you need to do is add a new entry to the panels and it should automatically appear, provided your board has a service and characteristic that matches what you define.