Fix donwload subs for non youtube videos and non-en language.
Fix download_transcripts link for non-en videos.
Add transcript download test.
Check for status in test.
Add test for track url.
Fix test to use cookie.
Use download_track in feature file.
Fix.
Fix typo.
Add new tests for get_transcript.
Add html5 test.
Fix acceptance test.
Fix html5 test.
Fix.
Fix test.