change translation_permission language to just translation
hide empty translations
remove debugging line
simplify interaction api
Revert "simplify interaction api"

This reverts commit 05d45971d1a27e13953bf898c2393df78c5b5eff.
Merge pull request #38 from CruGlobal/THINK-184-TRN

THINK-184-TRN change translation_permission language to just translation