[Maypole] URL reconstruction

[Simon Cozens]

Jesse Sheidlower:
> The authentication doc page discusses how to reconstruct the URL
> in a template, like so:
> 
> [% SET args = request.args.join("/"); %]
> ...
> <FORM ACTION="[% base %]/[%request.table%]/[% request.action %]/[%args%]">
> 
> So that one can, for example, take a detour to a login page and go
> back to where you came from.

[% request.path %] is the new way of doing things. It's in the manual
somewhere, but should probably be made explicit in a Request chapter recipe.

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