Previously in priv/static, now by default in production in /var/lib/mobilizon/sitemap and
configurable through the $MOBILIZON_SITEMAP_PATH ENV variable
Closes#1321
Signed-off-by: Thomas Citharel <tcit@tcit.fr>
Docker is installed at root but priv/ lies in lib/mobilizon-x/
We can use Application.app_dir(:mobilizon, "priv/static") to get the
correct path
Signed-off-by: Thomas Citharel <tcit@tcit.fr>
