New design for branch deletion confirmation
Part of https://gitlab.com/gitlab-org/gitlab-ce/issues/28849
| Path | Current Screenshot | New Title | New Description | New Buttons |
|------|--------------------|-----------|-----------------|-------------|
| `project/repository/branches` Unmerged | <img src="/uploads/21cde6d1ef6719644dd70eacd1783647/project-branches--delete.png" width=50% /> | **Delete branch ‘[Branch name]’?** | You are about to permanently delete the branch **[Branch name]**.<br>This branch hasn’t been merged into ‘[Default branch name]’. To avoid data loss, consider merging this branch before deleting it.<br>Once you confirm and press **Delete branch**, it cannot be undone or recovered.<br>To confirm, type <kbd>[Branch name]</kbd> | [Cancel] [Delete branch] |
| `project/repository/branches` Merged | | **Delete branch ‘[Branch name]’?** | You are about to permanently delete the branch **[Branch name]**.<br>Once you confirm and press **Delete branch**, it cannot be undone or recovered.<br>To confirm, type <kbd>[Branch name]</kbd> | [Cancel] [Delete branch] |
#### Existing discussion

(https://gitlab.com/gitlab-org/gitlab-ce/issues/28849#note_52046616)

(https://gitlab.com/gitlab-org/gitlab-ce/issues/28849#note_52067774)
issue