Workbench: minor error handling improvements

git-svn-id: https://svn.apache.org/repos/asf/chemistry/opencmis/trunk@1542214 13f79535-47bb-0310-9956-ffa450edef68
Browser binding: extensions of ACE principals are now included in JSON responses

git-svn-id: https://svn.apache.org/repos/asf/chemistry/opencmis/trunk@1542270 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/trunk' into trunk
Client: simplified and corrected cookie implementation

git-svn-id: https://svn.apache.org/repos/asf/chemistry/opencmis/trunk@1542396 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/trunk' into trunk