[web] implemented twig templating system (#4264)

Signed-off-by: Kristian Feldsam <feldsam@gmail.com>

data/Dockerfiles/phpfpm/docker-entrypoint.sh

@@ -181,6 +181,11 @@ fi
 # Fix permissions for global filters
 chown -R 82:82 /global_sieve/*
 
+# Fix permissions on twig cache folder
+chown -R 82:82 /web/templates/cache
+# Clear cache
+find /web/templates/cache/* -not -name '.gitkeep' -delete
+
 [[ ! -f /etc/nginx/conf.d/ZZZ-ejabberd.conf ]] && echo '# Autogenerated by mailcow' > /etc/nginx/conf.d/ZZZ-ejabberd.conf
 chown 82:82 /etc/nginx/conf.d/ZZZ-ejabberd.conf