[#4658] Allow zip files (extra mimetypes) from Windows users

[vaszig]

Closes #4658

Changes

• Added regression tests for the extra mimetypes
• Update UploadFileType choices
• Modify MimeTypeValidator to accept the deprecated version of the mimetype and the new one

Checklist

Check off the items that are completed or not relevant.

• Impact on features

  • [x] Checked copying a form
  • [x] Checked import/export of a form
  • [x] Config checks in the configuration overview admin page
  • [x] Problem detection in the admin email digest is handled

• Release management

  • [x] I have labelled the PR as "needs-backport" accordingly

• I have updated the translations assets (you do NOT need to provide translations)

  • [x] Ran ./bin/makemessages_js.sh
  • [x] Ran ./bin/compilemessages_js.sh

• Commit hygiene

  • [x] Commit messages refer to the relevant Github issue
  • [x] Commit messages explain the "why" of change, not the how

[vaszig]

This PR contains migrations changes and it needs backport, which makes it a bit hard to do it. This will be closed and tackled by basing the branch on the stable 2.6.x version in a new one.