(Issue540) Compatibility with PDFtk 2+
return full profile on discussion updates
Merge pull request #519 from stuartf/discussionUpdate

Update a discussion response has missing parameters
(Issue443) Fix multi-byte characters in activity streams
Merge pull request #548 from mrvisser/issue-443

(Issue443) Fix multi-byte characters in activity streams
Merge pull request #546 from mrvisser/issue-540

(Issue540) Compatibility with PDFtk 2+
(Issue529) Specify the updated users in discussion share activity so an activity is generated
Adding docs to unit test
(Issue529) Added udpate discussion activity test as well
Removed some unused users from the discussion activity tests.