Add process for milestone cleanup
Handbook update for proposal #3555 (closed)
- Updated development workflow and timeline chart. Added
M+1, 7th
when Milestonem
is marked as closed. - Updated chart in jsFiddle and snippet to capture new event.
- Added section explaining what happens when a milestone is closed.
- Updated js visuals https://gitlab.com/gitlab-org/gitlab-ce/snippets/1731455 and pointed to the new timeline graph http://jsfiddle.net/94nerdth/