* use antd Steps for Proposal/Milestones
* MilestoneAction component.
* Proposal/Milestones modifications.
* Proposal/Governance modifications.
* rename Governance tab to Refunds + hide if not contributor
* Story modifications for ProposalMilestones.
* Remove old Governance/Milestones + update story
* Make sure active step updates after mount via componentDidUpdate.
* have ProposalMilestones fill horizontal space
* allow outsiders to view state of MilestoneAction
* refactor + add is-count-n style
* count styles
* dynamic num milestones + rando titles
* geometryCases of 1 - 10 milestones
* better selected milestone visual hint
* dynamic step title overflow check + styles
* nowrap milestone title