[gimp-web/master] (28 commits) ...Merge remote-tracking branch 'origin/testing'

[Jehan <jehanp src gnome org>]

Summary of changes:

  1c09b0d... content, tools: adding new Freedif mirror. (*)
  86272ec... Issue #254: mirror.surf mirror doesn't exist anymore? (*)
  6bd4e02... tools: don't verify 2 times checksums from the main downloa (*)
  7f4eeec... tools: mirror check script to use HTTP request with headers (*)
  edc7e09... tools: flush stdout after each mirror check. (*)
  0aa4dfe... tools: HTTP calls moved to requests module instead of urlli (*)
  54f1d3f... tools: make the HTTP checks concurrently. (*)
  5a94436... tools: optimize further the gimp-check-mirrors script. (*)
  8f16969... tools: one more optimization of gimp-check-mirrors script. (*)
  1cb3c10... tools: don't wait forever for long downloads. (*)
  2720954... Add the first draft of the GSoC 2022 news post (*)
  8c16378... That wasn't how the draft status has to be set :) (*)
  442ffbe... A few more words on anyRGB (*)
  b24eb6f... Fix a typo (*)
  3b57153... content: remove Image metadata. (*)
  e3886ee... content: update the CMYK GSoC news. (*)
  e8570ab... content: adding a short paragraph about the unique GSoC slo (*)
  9cf2655... content: fix formatting. (*)
  3a77cc5... content: news update. (*)
  1b6eec9... content: adding some image of a print project with FLOSS. (*)
  636e96a... content: add a link to the GSoC page. (*)
  e6a5a5c... MR !80: Update content/books/index.md, NyC.jpg, BYNG2022_fr (*)
  3360f30... content: fixing previous commit for MR !80. (*)
  5e31e80... content: improve introduction. (*)
  12e8039... content: group books by languages. (*)
  121da22... content: remove draft status for the gsoc news. (*)
  032c088... content: update a bit the text and set to today's date. (*)
  0ed3145... Merge remote-tracking branch 'origin/testing'

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