Ability to merge one label into another label
Problem to solve
After creating some labels and adding them to many issues, we sometimes find that we want to restructure the labels. A situation that occasionally comes up is that we have multiple labels that have evolved into a similar meaning, and it's no longer useful for us to differentiate between them, so we'd like to combine them into a single label.
Intended users
User experience goal
Improve convenience in managing the structure of labels.
Proposal
On the page that lists the labels, in the actions dropdown menu, add a "Merge" item. This item would pop up a dialog that lets you select a target label. All issues with the original label would have the target label added, and then the original label would be deleted (both from the list of labels and from all issues).
Permissions and Security
Allow people with permission to delete labels to also merge labels.