ui: exclude data relating to unclean entities from UI

[aspiers]

Description

We should avoid visualising any data which relates to "unclean" entities, i.e. ones which have not yet been normalised. Cleanliness is tracked by the entity field described in #150.

Comments, Questions and Considerations

Blocked by

• db: express whether an entity has been 'cleaned' or not #150 (db: add unclean flag to entity model)

Acceptance Criteria

This story can be considered done when the following acceptance tests
are satisfied:

Given some clean imported data and some unclean imported data
When any part of the UI is shown
Then only data relating to clean entities is visible

[aspiers]

@JohnSmall @elischutze I wonder if we should do the same exclusion for the API? I guess that could be accomplished by filter parameters. In keeping with the basic principle of transparency, I feel that the API definitely should provide unclean data where wanted, not just clean data.