Increase time for convertion due to change to cloudoo (slow but more stable oood) and parallel test execution.

Update all known callers to use the new method.

Manage Gadget state in bt5.

Always use root web site.

Followup of b5d386ef.

An use case represents for example the process of creating one Sale
Order including generation of the related Sale Packing List.

It allows to record the number of use cases processed per benchmark
suite and the total time spent on these for each suite.

Purpose is to reduce code duplication.

cf commit 1c604e43

Rewrite fb9ab20f as the volatile usage is
wrong as the object may be unloaded to save space (and thus workflows enabled)
before editDocument() is actually finished.

add WebSite_viewSiteMapAsXML that returns the XML sitemap defined in http://www.sitemaps.org/protocol.html .