slapos_cloud: Allocation is unauthorized for the instance that don't have Subscription Request confirmed or started.

Restore the previous behaviour to set 0.0

Contributed by Sven Franck

This is mostly a simplification to follow range(int)

The price is defined on the subscription request and copied into the Open Order later, for periodical payments.

The person can be a Member and a Subscriber

slapos_accounting: If Hosting Subscription comes from Subscription Request apply Quantity and Pricing

New users should have appropriated email.

This is usefull when send emails

slapos_subscription_request: Subscription Request uses simulation state rather them validation state

This value will be used to request among other things.

The Subscription Item is Hosting Subscription, so it only acts as a "requester".

The input should be parametrable via script. this is not ideal, however it allow up adapt the inputs and multiply certain entries based on the amount of requested instances.

This commit includes an example for KVM Cluster

To enable get/setTextContent