I can run multiple, labeled Experiments

(User Story, To be Fixed , Priority: Low, Test Status: No automated tests yet , Reported By Justin du Coeur, )
Experiments
Summary: If we're going to ape git, we should eventually do it right. This is the Querki version of Branching, allowing me to run multiple Experiments in parallel, and only merge them into the Space itself when I feel like it.
This may be complete overkill for Querki's purposes -- let's see whether anybody actually gives a damn. But it's worth pondering.