Change the BZ assignee when it is changed in ETT

- NOTE: the assignee of the BZ will be changed irrespective of who is assigned
  to the BZ right now. This is BROKEN since we should only change the BZ that
  has the same assignee as the old assignee in ETT. This is a work in progress.
Merge pull request #21 from thescouser89/git-fix

Change the BZ assignee when it is changed in ETT