Revert "make it in line with geoserver master"

This reverts commit 80758d6874e097b5d01298b44ff2a3da12b60b72.
Revert "Add local workspace remove prefix configuration"

This reverts commit 46017309a935a17e4f8c4cd19f30f79295df9b5e.
Add local workspace remove prefix configuration

Currently by default the capabilities document produced from virtual workspaces will remove the namespace prefix from the layer names.  This commit adds a configuraton option to disable this behaviour.  This is also a fix for http://jira.codehaus.org/browse/GEOS-5476