Backport #27356 by @silverwind
Various improvements related to feeds:
- Fix markdown rendering
- Increase font size from 13px to default 14px via `flex-item`
- Add style to hashes
- Move the timestamp to title line. I realize it's not optimal for
translation, we may need to change all these translations
Before:
<img width="768" alt="Screenshot 2023-09-29 at 22 52 58"
src="edda8b84-23cf-4a43-90ad-a892798f4e6c">
After:
<img width="781" alt="Screenshot 2023-09-29 at 22 58 09"
src="7097474d-efcf-4f22-a2ab-834a4e25c4e8">
Co-authored-by: silverwind <me@silverwind.io>