Tiddlyweb - Report user and permissions details

[mahemoff]

It would be good for TiddlyWeb to support some kind of RESTful service to expose security and permissioning details.

For example, my client UI should only show options such as "delete" if the current user is sufficiently permissioned to do so. But how does the client know if that's the case? Right now, the only options I can think of are:

• duplicate application logic in the client
• build a custom server-side reporting service. This is something which could be generalised and packaged with TiddlyWeb.

I may end up going down the second route, in which case we could hopefully generalise it after that.

[cdent]

changeset:7608

The wiki and json serializations will report user permissions, if they can.