Allow creating a new issue board from "edit board"
Problem to solve
When editing an issue board, the original one gets overwritten. Sometimes it is desired to have a new board created instead ("save as..." instead of "save").
Target audience
- Parker, Product Manager, https://design.gitlab.com/research/personas#persona-parker
- Delaney, Development Team Lead, https://design.gitlab.com/research/personas#persona-delaney
Proposal
Add "save as new board" button:
What does success look like, and how can we measure that?
What is the type of buyer?
(Which leads to: in which enterprise tier should this feature go see https://about.gitlab.com/handbook/product/pricing/#four-tiers )
