added check to see if the cron script is being run via cron

roles/live2dev/templates/cron.j2

 #!/bin/bash
 
-if [[ "${USER}" != "{{ item }}" ]]; then
-  echo "This script should be run as {{ item }}, please sudo first"
-  echo "sudo -u {{ item }} -s /bin/bash"
-  echo "${0}"
-  exit
+# $LOGNAME is set to {{ item }} when this script is run via cron and is 
+# unset when run via a terminal
+if [[ "${LOGNAME}" != "{{ item }}" ]]; then
+  if [[ "${USER}" != "{{ item }}" ]]; then
+    echo "This script should be run as {{ item }}, please sudo first"
+    echo "sudo -u {{ item }} -s /bin/bash"
+    echo "${0}"
+    exit
+  fi
 fi
 
 cd ~/sites