Use compressed responses for gnusocial/postactiv

src/freedombone-app-gnusocial

         echo '  listen [::]:443 ssl;' >> $gnusocial_nginx_site
         echo "  server_name $GNUSOCIAL_DOMAIN_NAME;" >> $gnusocial_nginx_site
         echo '' >> $gnusocial_nginx_site
+        function_check nginx_compress
+        nginx_compress $GNUSOCIAL_DOMAIN_NAME
+        echo '' >> $gnusocial_nginx_site
         echo '  # Security' >> $gnusocial_nginx_site
         function_check nginx_ssl
         nginx_ssl $GNUSOCIAL_DOMAIN_NAME
     echo "    listen 127.0.0.1:$GNUSOCIAL_ONION_PORT default_server;" >> $gnusocial_nginx_site
     echo "    server_name $GNUSOCIAL_DOMAIN_NAME;" >> $gnusocial_nginx_site
     echo '' >> $gnusocial_nginx_site
+    function_check nginx_compress
+    nginx_compress $GNUSOCIAL_DOMAIN_NAME
+    echo '' >> $gnusocial_nginx_site
     function_check nginx_disable_sniffing
     nginx_disable_sniffing $GNUSOCIAL_DOMAIN_NAME
     echo '' >> $gnusocial_nginx_site

src/freedombone-app-postactiv

         echo '  listen [::]:443 ssl;' >> $postactiv_nginx_site
         echo "  server_name $POSTACTIV_DOMAIN_NAME;" >> $postactiv_nginx_site
         echo '' >> $postactiv_nginx_site
+        function_check nginx_compress
+        nginx_compress $POSTACTIV_DOMAIN_NAME
+        echo '' >> $postactiv_nginx_site
         echo '  # Security' >> $postactiv_nginx_site
         function_check nginx_ssl
         nginx_ssl $POSTACTIV_DOMAIN_NAME
     function_check nginx_disable_sniffing
     nginx_disable_sniffing $POSTACTIV_DOMAIN_NAME
     echo '' >> $postactiv_nginx_site
+    function_check nginx_compress
+    nginx_compress $POSTACTIV_DOMAIN_NAME
+    echo '' >> $postactiv_nginx_site
     echo '  # Logs' >> $postactiv_nginx_site
     echo '  access_log /dev/null;' >> $postactiv_nginx_site
     echo '  error_log /dev/null;' >> $postactiv_nginx_site

src/freedombone-utils-web

     echo '' >> $filename
 }
 
+function nginx_compress {
+    domain_name=$1
+    filename=/etc/nginx/sites-available/$domain_name
+
+    echo '    gzip            on;' >> $filename
+    echo '    gzip_min_length 1000;' >> $filename
+    echo '    gzip_proxied    expired no-cache no-store private auth;' >> $filename
+    echo '    gzip_types      text/plain application/xml;' >> $filename
+}
+
 function nginx_ssl {
     # creates the SSL/TLS section for a website
     domain_name=$1