Hackage 2: Displaying logged-in info

[Ian Lynagh]

Hi all,

I'd like to add "logged in info" to the Hackage 2 page template; i.e. if
not logged in then put a small login form somewhere, and if you are
logged in then show the username and provide a logout button.

I've started experimenting, and ran into a problem with the caching. It
looks like complete pages are currently cached, e.g. in
    Distribution.Server.Features.Html.initHtmlFeature
but this is incompatible with them having personalised logged-in info
on. So we would need to switch to either only caching the contents of
the "content" div, or caching the data that the page is built from. The
former is probably simpler.

Given the above problem, and the breadth of the change, I thought I'd
check what other people think before spending too much time on this. So,
does this sound like the right way to go?


Thanks
Ian