O3-4930: Add "All Orderable Tests" concept for Result Filter

Adds a Parent concept, "All Orderable Tests", to contain Tests Orderability for the purposes of the Results Filter Tree view. Also added a French translation for Tests Orderability.

Pre-requirement for https://openmrs.atlassian.net/browse/O3-4930.

Captured for RefApp as wel here: openmrs/openmrs-content-referenceapplication-demo#31

Author: gracepotma