LifeCyle states should not be hardcoded in the Advanced_Search query model

This method is called in the default advanced search form:
deleteActions.searchDeletedDocuments

It adds the following predicates to the query model:
(ecm:currentLifeCycleState = 'project' OR ecm:currentLifeCycleState = 'approved' OR ecm:currentLifeCycleState = 'obsolete')

This is really bad when you have custom lifecycle...