This was introduced at:

nexedi/erp5@f3bebea3

This helps to introduce some scripting for allocation algorithm for specialise certain nodes.

This change was originally introduce by Alain Takoudjou.

Those scripts are only usefull for resilient (kvm, webrunner) instances.

Allows to use multiple entries forms the same software type (simple,advanced,slave).
Implement a way to render text area for some string fields.

This reverts commit d57b8d5a.

It is easy to patch in this way.

People which are not service providers don't pick versions of the software releases, they get the latest.

This allow us to customize better the messages.