Don't depend on preferences

[jeff-zucker]

Three is nothing in the spec that demands that a Pod have a preferences file or defines an audience such as solid:PowerUser. CSS, for example, does not pre-provision Pods with a preferences file or define an audience. This means that when we use SolidOS to log in to CSS, even when we are logged in, we only see those pane/icons that a non-logged-in user sees - no RDF, no Under-the-hood because we haven't read any preferences. Since it isn't in the spec, we can't assume that new servers will provide it either.

So I suggest that we change the behavior of audience - that if the user is logged in and there is no preferences file, we default to a solid:PowerUser (or Developer) view. That way a logged-in user can delete files, which currently they can not.

[jeff-zucker]

This issue is subsumed by #66 so closing.