CAY-1846  Reworking of callback mapping

Jul 31 patch from Ilya Vasiuk

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/trunk@1509355 13f79535-47bb-0310-9956-ffa450edef68
CAY-1857  Problem with hotkeys

patch by Ilya Vasiuk

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/trunk@1509364 13f79535-47bb-0310-9956-ffa450edef68
CAY-1857  Problem with hotkeys

release notes

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/trunk@1509365 13f79535-47bb-0310-9956-ffa450edef68