support pull request creation
ITI-1934
tests for github client
support register bamboo branch
ITI-1924: base is master when no parent is included in the issue fields
improve logging
Merge pull request #34 from ticketscript/ITI-1923

ITI-1923: support register bamboo branch
Merge pull request #35 from ticketscript/ITI-1926

ITI-1926: Implement final changes for ITI-1919
fine-tune error messages
rework @silvanu comments
add logging parameters to template
Merge pull request #36 from ticketscript/ITI-1919

ITI-1919 Activate JIRA workflow v3.2 for product development