Snap!con collection, projects not load, v7 fornat projects

Snap!con collection contains v7 projects.
At least

Umm I don't think this is a bug, exactly. I suppose we could make the site look at the header of a project it's about to load, and select the appropriate version of Snap! to run it in, but this is meant to be only a short-term issue.

So maybe put a complete link to Dev version in the description