Adds value-arrays as a separate item so they can be picked separately.

Handles the case when a parameter contains both value-arrays and values (both are needed in the query in order to display something).

This fixes the issue 'clip does not show anything'. It can be considered a hot fix so let's merge this to master so that it is now stable (cinema_python will also be merged to have full compatibility with the previous release datasets). This version is almost equivalent to our last release.