validations
ukcanext
radcloud
test changes (units)
Merge pull request #1433 from marqh/ukcaRadCloud

Ukca rad cloud
Fix loading type for ff 'integer_constants' array.
Skip test if no data.
Merge pull request #1437 from pp-mo/ff_ints

Fix loading type for ff 'integer_constants' array.
Support loading of LBC type fieldsfiles.