Add transcripts field and tests for import/export.
Work in progress.
Ad list of all languages.
Work in progress.
Work in progress.
Fix tests.
Add translations transcrips with refactoring.
Fix error.
Fix for en language.
Work in progress.
Remove content-disposition
Work in progress.
Download transcripts for given lang.
Fix styles in lms.
Add correct language determination.
Send language names to front-end.
Rename transcripts to transcript.
Add tests and fixes.
Fix tests.
Fix tests.