Krystian Rosiński

I work on Windows, so running functional tests will not be an easy task. Maybe I'll try it on a virtual machine. For now I'm pretty sure that to fix...

This is what it looks like after the changes. We can go back to the [icons](https://icons.getbootstrap.com/) in Bootstrap 5. 

@stevepiercy I have no idea about lint fail yet. I passed all functional tests running locally from deform with the changes applied in https://github.com/Pylons/deform/pull/523, https://github.com/Pylons/deform/pull/524, https://github.com/Pylons/deformdemo/pull/123 and with the following...