Edited Issue: Designer: Consider removing facet propagation feature [642]

This feature was added in EF Designer for VS 2012, but it turns out the implementation only works for SQL Server. Before we can remove it we need to improve our understanding of the possible effects and consider alternative approaches.

This related to issue http://entityframework.codeplex.com/workitem/521, which we will use to track porting the limited fix we did for EF Designer for VS2012.