Import: remove extra/advanced step from project import wizard

[humitos]

This commit removes the "Extra/Advanced" step and moves the "language" attribute to the "Basics" step -- the first one, since that field is important.

Closes #10392

[stsewd]

LGTM, I could also see having description and homepage listed, maybe grouping them using crispy forms? Probably something for the new templates. I'm including Anthony in the review, he may have some thoughts here.

[agjohnson]

On the new dashboard side, all forms are just displayed via {{ form|crispy }}, so should be fairly easy to alter these forms on the new dashboard if we're doing the same thing here.

We also did talk about restructuring more of the projects settings in the near future, so could keep some of the changes for later too. I think we'd like more project admin tabs/pages, so if any of these fields feel out of place anywhere, maybe those are ones to consider moving out.

maybe grouping them using crispy forms

I need to play around with this more, but currently the crispy forms don't do fieldsets much at all. It should be okay normally though, I expect there is just some missing template overrides for the fieldsets in the crispy-sui form templates

I could also see having description and homepage listed

On the project settings dashboard these are probably good fields to have. But on the import page, perhaps we want to be relying on GitHub and friends to give us as much of these fields as we can? The could mean not presenting these fields to users on remoterepo connected project creation.

No strong feeling here either way though.

[humitos]

I could also see having description and homepage listed

on the import page, perhaps we want to be relying on GitHub and friends to give us as much of these fields as we can?

Yes. This was my feeling here as well and that's why I decided to not include them for now. Besides, we have talked about deprecating the Project.description field in #3689.

I'm fine moving forward with this PR as-is and update it later if needed.

[agjohnson]

This all looks reasonable to me. I haven't tried these changes to the UI yet, but don't expect much difference in either dashboard.