Refs #1446

Integration tests were often different simply because the internal idsubdatatable in the response was different. However. this idsubtable is really just an internal ID and it is not expected that this ID is the same across several archiving processes. Therefore integration tests will now set a special flag to remove the ID from the response, to minimize noise.

git-svn-id: http://dev.piwik.org/svn/trunk@2495 59fd770c-687e-43c8-a1e3-f5a4ff64c105