Print request information to help debugging issues

[Kaliumhexacyanoferrat]

As a developer of a web application or the server itself, I would like to see the properties of a request to my application, so that I can better investigate bugs without the need of debugging.

Example

var requestInfo = RequestInfo.Create();

layout.Add(requestInfo);

Acceptance criteria

• The functionality is implemented in a new module
• When invoked, the handler returns a HTML page rendering the properties of the request, including the header, cookies, the body, and so on
• The HTML page is rendered using one of the rending engines and integrated into the currently active template (theme), if any
• The handler responds to all requests, so that it can work as a catch-all
• The functionality is covered by acceptance tests
• The functionality is documented on the website