Better tag namespace display and customization

[KamillaPup]

It would be awesome if tags could be sorted by namespaces instead of subtag so that unnamed spaced tags to on the bottom.

I would also love the ability to add different namespaces to also have separate colors. I could do this by editing the code for my instance, but having it in the gui would be great.

Or automatically assign a random color to all namespaces.

Thanks for epic app!