Radio Channel Generator Update

The only thing left is the Save and Open buttons! I am hoping to release the beta version within a couple of days :)

I initially had the  icons of the Retro channel as default if there were no custom ones, but in the end I added the possibility to choose between 6 of them, all from the base game so you can share the channels with anyone without worrying about the packs they own. I will probably make a poll later to add another 3, so you can choose which ones are needed.

If you think any functionalities should be added, let me know and I'll see what I can do :)