Keep track of ghost version

So that we're not upgrading every time

src/freedombone-app-ghost

 IN_DEFAULT_INSTALL=0
 SHOW_ON_ABOUT=1
 
+GHOST_VERSION=1.0.2
 GHOST_DOMAIN_NAME=
 GHOST_CODE=
 GHOST_ONION_PORT=8104
 
     kill_pid=$(ps aux | grep "ghost" | awk -F ' ' '{print $2}' | head -n 1)
     kill -9 $kill_pid
+
+    kill_pid=$(ps aux | grep "ghost" | awk -F ' ' '{print $2}' | head -n 1)
+    kill -9 $kill_pid
 }
 
 function logging_on_ghost {
 }
 
 function upgrade_ghost {
+    CURR_GHOST_VERSION=$(get_completion_param "ghost version")
+    if [[ "${CURR_GHOST_VERSION}" == "${GHOST_VERSION}" ]]; then
+        return
+    fi
+
     read_config_param GHOST_DOMAIN_NAME
 
     if [ ! -d /var/www/$GHOST_DOMAIN_NAME/htdocs ]; then
     fi
 
     systemctl stop ghost
+    ghost_bust
 
     cd /var/www/$GHOST_DOMAIN_NAME/htdocs
 
     chown -R root:root /usr/local/lib
     chown -R ghost: /var/www/${GHOST_DOMAIN_NAME}/htdocs
     systemctl restart ghost
+    sed -i "s|ghost version.*|ghost version:${GHOST_VERSION}|g" ${COMPLETION_FILE}
 }
 
 function backup_local_ghost {