Explicit compatibility ranges

Add a few more constraints in the MANIFEST.mf so that
a end user can't install the tool in an incompatible environment.
UML-190 Unsynchronized Use case diagram

Add Related will now import Extend/Includes of use case and
- make sure it has to create the container view (subject) before or not
Add Related will now stop importing any classifier except UseCase and
Actor when clicked on a subject.