Ratings: extend support to non-app entities

[davidwatkins73]

Description

Initially:

• [x] End User Applications
• [ ] Actors
• [ ] Flows ?

Model Code changes needed:

• [x] MeasurableRatingView (singular view) - needs to replace application with entityReference
  • [x] Imagine this will have a knock on the the measurable-rating page (breadcrumbs and app link)

Resourcing

We intend to contribute this feature