For each of Git, SVN, and Hg we should have instructions for how to get started with a brand new (empty) repo, and for pushing existing code to the new repo. Provide specific commands. Show the text/commands on the repo page to developers/admins if the repo is empty (or r1 for SVN)
Waiting on some design work Sonny wants to do here.
On sftheme and allura js/4382. To test, create a new empty repo for each scm type then follow the instructions to make sure they work. Since sandbox scm is not quite right, I actually tested the commands against new repos in my live user project.