tern: fix translation source lookup
tern: fix translation source lookup

ofer43211/unisubs,norayr/unisubs,wevoice/wesub,wevoice/wesub,pculture/unisubs,eloquence/unisubs,wevoice/wesub,wevoice/wesub,ofer43211/unisubs,norayr/unisubs,ofer43211/unisubs,pculture/unisubs,norayr/unisubs,ujdhesa/unisubs,ofer43211/unisubs,eloquence/unisubs,ReachingOut/unisubs,ujdhesa/unisubs,norayr/unisubs,eloquence/unisubs,eloquence/unisubs,pculture/unisubs,ReachingOut/unisubs,ReachingOut/unisubs,pculture/unisubs,ujdhesa/unisubs,ReachingOut/unisubs,ujdhesa/unisubs