Only show RelationCards with the selected audience level

[bp289]

[edited: ticket below]

[DomVinyard]

When entering a route for a particular topic on the website e.g /javascript

3 different cards for the relationships are being rendered, shown below:

This is a consequence of rendering a different relationship for each age/audience. We need to update the TopicPage to only render the relation cards for the correct ages.

Tasks

• Filter the relationships to show only the ones with the selected age/audience

Acceptance criteria

• A TopicPage only shows relationships that are age appropriate