Make D9 support visible
A couple things going on here:
- There had been a draft page specifically for D9, but it wasn't published in the menu. Subsequently, changes where made in the D8 page, so D8/D9 got out of sync. Additionally, some (but not all) of the D8 page expanded to reference D9. (The process+comments are like 95%+ the same...) Let's remove the old D9-specific draft and just use the same page.
- If you're reading the D8 page, there's a missing step for D9 (#9 (closed)). Added this.
- The "Requirements" and page-titles point to D8 specifically. Indicate that D9 is OK. (The label
Drupal 8/9
does this without implying anything about D10.)
Edited by totten