Mark transcription text as safe

[itsthejoker]

Relevant issue: #275

Description:

All transcription text is automatically escaped for security reasons, but because it's being dropped right into SimpleMDE then we can mark it as safe and let normal HTML characters (< > & % to name a few) render as expected.

Screenshots:

Checklist:

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