Don't bother saving a subtitle if it's not synced
1899: Made youtube imports be configurable to run sync since the T import will require that
Renamed parameter to make intention clearer, make sure fetch subs async is only used if the video type supports it
Fixed imprtable flag on YT type
1899: Make sure we always have a description, even if blank
Merge branch 'production' into i-1899-from-production
1899: Updated integration repo
Merge branch 'production' into x-youtube-username-fix