Fix #1274
Fix #1274

Always use get_subtitle_version, since autocreate
sets the subtitle_version to a language that it's
not the task's language and that's never updated.

This affects unpublish/publish because after publish
if we create a new version (by adding a subtitle,
for example) it makes the task's subtitle_version
be outdated.
wevoice/wesub,pculture/unisubs,norayr/unisubs,ReachingOut/unisubs,pculture/unisubs,pculture/unisubs,ofer43211/unisubs,eloquence/unisubs,ofer43211/unisubs,eloquence/unisubs,ReachingOut/unisubs,ReachingOut/unisubs,ujdhesa/unisubs,eloquence/unisubs,ujdhesa/unisubs,norayr/unisubs,pculture/unisubs,norayr/unisubs,eloquence/unisubs,wevoice/wesub,ujdhesa/unisubs,ujdhesa/unisubs,wevoice/wesub,ofer43211/unisubs,ofer43211/unisubs,ReachingOut/unisubs,wevoice/wesub,norayr/unisubs