[#1560] Publish documentation using no cache.


Problem description
===================

When documentation is published, it is generated using the quick/cached version... so it is not alwasy updated.


Why we got into this (5 whys)
=============================

* There was no test for this use case.
* We did not think about this.


Changes description
===================

Update publish task to force re-building all pages.


How to try and test the changes
===============================

reviewers @alibotean 

This new version is already used in https://github.com/chevah/server/pull/210

This is just to let you know about changes.

Thanks!