Template subscriptions should not contain created field

[e-pettersson-ericsson]

Description

The template subscriptions should not contain the "created" field. The templates needs to be updated and documentation (if any hard coded examples exists) also needs to be updated.

Motivation

The "created" field is something EI adds later when a subscription is actually created and added to the database. It makes no sense to have this field in template subscriptions which are only meant as examples for users.

Exemplification

src/main/resources/templates/subscriptions.json should be updated. All "created" fields should be removed.

Benefits

Possible Drawbacks