[gimp-web/master] (18 commits) ...Merge branch 'testing'

[Jehan <jehanp src gnome org>]

Summary of changes:

  2b6fd31... Fix linking issues in old posts. Fix for #234 (*)
  6f59848... tools: add a new "update-mirrors.py" tool. (*)
  91436e1... tools: update downloads.http.txt. (*)
  44dc7c3... Fixing some build warnings. (*)
  a62b51e... tools: add 2 mirrors to download rotation. (*)
  703e065... Revert "Issue #230: Broken images and video on the website. (*)
  01a3047... content: fixing another image URL from GIMP 2.10 release no (*)
  6afb630... content: draft news to promote developers' funding. (*)
  b8dae5c... content, themes: add a 'buttons' CSS class for centered but (*)
  ff779c0... content: removing the whole part about organizations. (*)
  2f48dc8... content: add info about GIMP liberapay as per pippin's comm (*)
  9e0b70f... content: update the funding news. (*)
  f3d60f1... tools: fix mt (make torrent) tool. (*)
  4b009d6... content: add macOS release for GIMP 2.10.24. (*)
  676e898... content: remove draft status for our last news. (*)
  96b9cbb... content: some (possibly final) edits. (*)
  0c52510... content: more fixes. (*)
  a7fe8cb... Merge branch 'testing'

(*) This commit already existed in another branch; no separate mail sent