A page that states you are editing a draft means that a reviewed page has already been chosen. The draft you are editing will not become public until a user in the reviewer group reviews the page with the minimum acceptance standards.
Only reviewers can validate pages. If you are not a reviewer, you can contact one by finding them here. If you are a reviewer than you can validate/review draft articles. To do this click on the plus and minus symbol "(+/-)" and find the link that says "# edits await approval". Click on that and submit a review of that page. After submitting a review remember that you have accepted that page as the 'stable' version.