Another fix for #1658
Another fix for #1658

When uploading, only set is_original to True if 
the language doesn't have one.
This is done so we have the same behavior on uploads
and on transcripts done on the interface.
wevoice/wesub,wevoice/wesub,ujdhesa/unisubs,pculture/unisubs,eloquence/unisubs,ReachingOut/unisubs,ofer43211/unisubs,ReachingOut/unisubs,norayr/unisubs,pculture/unisubs,norayr/unisubs,eloquence/unisubs,ofer43211/unisubs,ujdhesa/unisubs,norayr/unisubs,pculture/unisubs,ReachingOut/unisubs,norayr/unisubs,ReachingOut/unisubs,eloquence/unisubs,ujdhesa/unisubs,ofer43211/unisubs,pculture/unisubs,wevoice/wesub,eloquence/unisubs,wevoice/wesub,ujdhesa/unisubs,ofer43211/unisubs