title: "Not in" view for 1:N relationships
body: <p>Assume we have an entity A which has a 1:N relationship with entity B. I want to create a view, that shows only records of A which has no entity B. A good example is, I want to view Quotes without Order.</p>
  
  <p>Any solution with any complexity would be appreciated, such as plugin, script, silverlight...!</p>