Space Root View

I should be able to group Pages in the Space Root View: That is, I should be able to categorize Pages in some fashion.

I should be able to manage the Page order in the Space Root View: That is, instead of just showing it in alpha order, I should be able to rearrange the list.

In the default Space Default View, Pages should show their Summaries, if any: That is, if a Page has a Summary, that should be shown somehow in the default view.

Pages should have the Summary Property: That is, Summary should be a standard Property on Pages.