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- Add an option 'applyPrefix' to stylesheets. This can be set in the UI, in
the various constructor methods, or as an attribute in a cssregistry.xml
file. It defaults to false. It has no effect in debug mode. In non-debug-
mode, however, it will parse a stylesheet for 'url()' statements that
contain *relative* paths. These will be prefixed with the Plone site path.
If the stylesheet id contains a path (e.g. '++resource++foo/css/bar.css')
this will be used in the prefix as well. The goal is to make relative paths
internal to a resource directory work, even when resource merging is used.
Previously, it'd break because resource merging changes the URL.
[optilude]