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

This key isn't used since f394a34c . Removing
it ensures translators don't bother translating it for nothing

php 7.3.0 is released on dec-06-18.
http://php.net/ChangeLog-7.php#7.3.0

added badges for number of issue, release and license. It will give quick info to users about q2a project.