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.