use commas at the end of the array

- add require 'app/cookies.php' in order to safely use qa_cookie_get()
- replace @ with isset

Should use identical headers to GET but no body.

Replace id with an options parameter, add template option

Remove .htaccess file from repository and ignore it in .gitignore

Fixes #725

Fix file permissions

Fix selection of answers trying to close questions

Rm lang key "caching_dir_public"

check for php 7.3