btn-small -> btn-sm
What does this MR do?
Why was this MR needed?
- Approve button too big
- Rebase button too big
- Add related issue button icon misaligned
Does this MR meet the acceptance criteria?
- Changelog entry added, if necessary
- Has been reviewed by UX
- Has been reviewed by Frontend
- Conform by the style guides
What are the relevant issue numbers?
Closes #3637 (closed)