correcting an error where attribute lists ([]) were not being handled properly by constraints
also it seems that I somehow deleted an AssociationClass test's jet include, so I added it back(the test wasn't passing without it)


git-svn-id: http://umple.googlecode.com/svn/trunk@4578 6ebf9d09-8eb1-0036-9d08-68c07d1b990a