The tests include a check for the line numbers that an error occurs
on. The removal of the import future has reduced these values by 2.

Accidentally removed inheritance of systemtesting.MantidSystemTest when
removing with_metaclass and add_metaclass. Put them back.

Removes all of the from __future__ imports that open and close the
brackets on the same line. This is most of them.

Fix cpp check 1.90 warnings

Change output ws names in Polaris.create_total_scattering_pdf

Emit Kafka exception msg when err callback used

Add quotes to Span patching step, in case there are spaces