A Software Product is a variated resource with 2 axes:
- Software Product Release Variation (optional variation),
  to not force updating Order/Delivery every time one Instance is upgraded
- Software Product Type Variation
It is linked to a Project (virtual master).

Redesign the Upgrade Decision logic.
It is now a Ticket, generated by the Allocation Supply configuration:
- upgrade is different for every Project
- upgrade can be triggered on a specific Node, or for a specific user

Upgrade Decision is created automatically only if there is a single possible release allocable
for a Software Product.
Otherwise, it must be created manually.

The Upgrade Decision must be approved by the Project manager,
who is responsible for the Allocation Supply configuration.

Also in this commit:
* drop template usage
* trigger alarm with interaction workflow