Different config UIs
I noticed the following issues with the Config UI:

1. As seen in the first part of the video, when navigating to `Configs` and then selecting the channels or inputs of my only configured TV, only the first entry shows up. When clicking "Add Input/Channel", the next entry that is present in `config.json` is revealed.

2. When selecting my configured TV from the list and clicking the button to edit that config, the `Channels` list is loaded completely, but has a different layout as in the first part of the video.

https://user-images.githubusercontent.com/9931588/135852993-b8a893d6-edc9-48e3-bf3f-363626137193.mov

