Add script to fix multi comment transcriptions

[TimJentzsch]

Relevant issue: N/A

Description:

Multi comment transcriptions weren't picked up properly by bot, only the first comment made it to Blossom. This script goes through the transcriptions and fixes them in the database.

:information_source: This PR is branched from #349, so that should be merged first. :information_source:

Checklist:

• [x] Code Quality
• [x] Pep-8
• [ ] Tests (if applicable)
• [x] Success Criteria Met
• [x] Inline Documentation
• [ ] Wiki Documentation (if applicable)