single GeniSlices project. There two forms to this;

1. If the user is actually a local user, create the sliver in the
   User's "default" project. Later this will change to use use sub
   authorities, when we can generate and read those credentials.

2. If the user is form another SA, create a new non-local project
   named by the SA's domain, and optionally a subgroup named by the
   project sub authority (see above comment).

At the same time, add proper resource usage accounting. In other
words, Show History on the web page works for protogeni experiments
and projects.