[#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 is a neat version of #4685 which was closed due to wrong base. This should be applied to 2.7 and master when it's has been approved.

[sergei-maertens]

Forward ports applied to:

• stable/2.7.x: 1459118da99e4766fc276e0f94d29be860adebfc
• stable/2.8.x: 180ab232f7a33aab867a15caf7fa024b5881ab46
• master: 70771b792a183889247dfbe914547d1986505012