ACE-625 show more details in Web UI

- added extensions to show the details of artifacts (refactoring the existing
  target-info extension);
- added extensions for all associations in the various columns.



git-svn-id: https://svn.apache.org/repos/asf/ace/trunk@1802386 13f79535-47bb-0310-9956-ffa450edef68
16 files changed