Various design fixes for BranchSelector
- Add Canonical badge for canonical branch
- Add commit summary to BranchSelector
- Add branch icon for each branch in the list
- Add Canonical badge for canonical branch
- Add commit summary to BranchSelector
- Add branch icon for each branch in the list
Make use of a new CommitButton component to have the same style and behavior on the BranchSelector and the Blob header
Also fixes some border radiuses
Update anchor hash in URLs to radicle.xyz
Rebase and fix e2e tests
Fix npm run check issue