FromHoudiniGroupConverter ignores internal groups.
FromHoudiniGroupConverter ignores internal groups.

This fixes a bug where the group converter would take preference just because of the selection state. I've verified the fix, but unfortunately I can't write a test case, because there doesn't appear to be any way to create internal groups from python...

davidsminor/cortex,danieldresser/cortex,hradec/cortex,lento/cortex,danieldresser/cortex,goddardl/cortex,lento/cortex,davidsminor/cortex,goddardl/cortex,appleseedhq/cortex,hradec/cortex,appleseedhq/cortex,danieldresser/cortex,davidsminor/cortex,hradec/cortex,davidsminor/cortex,danieldresser/cortex,goddardl/cortex,lento/cortex,appleseedhq/cortex