Channel editor breaks channels starting with file://

[carlfischerjba]

I have a channel hosted on an internal company server which I use on Windows. It's listed in .condarc as file://\\my_server/development/conda_packages although I believe it was added via conda config --add channels \\my_server\development\conda_packages.

Conda-manager doesn't like this channel and insists on prefixing it with https://conda.anaconda.org/ which breaks it.

Based on the conda docs, file:// seems to be the only other valid channel path. Could we support it? Looks like a small change is required here.