Marianne Lemoine / ctools

So far, all pipeline example scripts are included in the unit test. Results are not yet checked, but it is assured that all scripts execute without any error.

This command was run:
  autopep8 --select E101,W191 --in-place --recursive .

It fixes only these two issues:
  - W191 indentation contains tabs
  - E101 indentation contains mixed spaces and tabs