fixed #28 Update the whole review on adding comment to just one file

extracted parse comment method in crucible session
Merge pull request #37 from klikh/master

#36 Fix adding and showing comments for the diff chain
updated since-build number to get diff API
Check beforeRevision, if afterRevisions is not available

(the case of removed files)
Add a timeout to HTTP queries.
Merge pull request #40 from klikh/check_before_revision

Check beforeRevision, if afterRevisions is not available
Merge pull request #41 from klikh/http-timeout

Add a timeout to HTTP queries.