isEmptyMessage can be an object as well as a string
isEmptyMessage can be an object as well as a string

In fact, all that was needed to make this work was to relax the
propTypes validation. In rather a nice testimony to the cleanness of
the code, the actual rendering Just Worked.

Fixes STCOM-184.

folio-org/stripes-components,folio-org/stripes-components