Fix #438, add a deactivation option through CMake

[JAuriac]

Missing the case where paraconf is missing.

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Before merging your code, please check the following:

• you have added a line describing your changes to the Changelog;
• you have added unit tests for any new or improved feature;
• In case you updated dependencies, you have checked pdi/docs/CheckList.md
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[jbigot]

Warning you're updating the tutorial. This is unrelated

[benoitmartin88]

I think this PR is almost ready for merge. Just a few changes are needed.

[JAuriac]

Warning you're updating the tutorial. This is unrelated

The tutorial previously used broke the CI.

[JAuriac]

Warning you're updating the tutorial. This is unrelated

The tutorial previously used broke the CI.

Changing back to tutorial @ 7334107.

[benoitmartin88]

LGTM !