Changes

Bug 527092 - Inconsistent behaviour when deleting Domains Specifications
and Vocabularies
Prompted a dialog box on deleting the Domain Specification and 
Vocabulary to decide whether it should be deleted only from the 
graphical diagram or from the underlying model also. 
Change-Id: I17a109147e3852fabde8fcfc97d14b0de8d04385 Signed-off-by: Yash
Khatri <yash.khatri@scania.com>