fixed signature of loadConstraintReferences #4438
Merge branch 'hotfix/4444'

Close #4444
Merge branch 'hotfix/4447'

Close #4447
PR #4439
Merge branch 'hotfix/4438' of git://github.com/leodido/zf2 into leodido-hotfix/4438
Forward #4439
Merge branch 'leodido-hotfix/4438' into develop