Co-authored-by: PauloVilarinho <paulotarsobranco@hotmail.com>

Port 5a8c651e8f to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

Port a1347f456e to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

Port b55fc883b6 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

Conflicts:
- `README.md`:
  Upstream README has been changed, but we have a completely different one.
  Kept our `README.md`.
- `lib/sanitize_ext/sanitize_config.rb`:
  Upstream added support for more incoming HTML tags (a large subset of what
  glitch-soc accepts).
  Change the code style to match upstream's but otherwise do not change our
  code.
- `spec/lib/sanitize_config_spec.rb`:
  Upstream added support for more incoming HTML tags (a large subset of what
  glitch-soc accepts).
  Kept our version, since the tests are mostly glitch-soc's, except for cases
  which are purposefuly different.

* New translations en.json (Spanish)
[ci skip]

* New translations en.yml (Spanish)
[ci skip]

Merge upstream changes

Port d3eefead30 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

Co-authored-by: Jean Boussier <jean.boussier@gmail.com>