RhodeCode CE/EE

We have a custom page for NGINX if RhodeCode is down, under: https://internal-code.rhodecode.com/rhodecode-enterprise-ce/files/default/rhodecode/public/502.html

It is shown via such NGINX entry:

        ## custom 502 error page
        error_page 502 /502.html;
        location = /502.html {
           root  /path/to/.rccontrol/enterprise-1/static;
        }

It looks very ugly, we should make it look nice and have some more usefull information.

We CANNOT use any variables, images etc. It needs to be PURE html (similar to email templates) but without variables.