- added test case for navigability changes of association end connected to   an actor
- added test case for navigability changes of association end connected to
  an actor


git-svn-id: 80d932a80928324f4d3d71af042e652e41ead033@2270 a8418922-720d-0410-834f-a69b97ada669

amolenaar/gaphor,amolenaar/gaphor