Removed unnecessary empty line from cron files

Added backup and restore functions #32
Added autobackup cron job

zulip-puppet/files/nginx/zulip-include-frontend/app

@@ -39,7 +39,7 @@ location /api/v1/events {
 
     proxy_pass http://tornado;
     include /etc/nginx/zulip-include/proxy_longpolling;
-
+    proxy_buffering                  on;
     proxy_set_header X-Real-IP       $remote_addr;
 }
 

zulip-puppet/files/nginx/zulip-include-frontend/upstreams

@@ -3,10 +3,10 @@ upstream django {
 }
 
 upstream tornado {
-    server localhost:9993;
+    server 127.0.0.1:9993;
     keepalive 10000;
 }
 
 upstream localhost_sso {
-    server localhost:8888;
+    server 127.0.0.1:8888;
 }