Check for updates on the control panel

src/freedombone-controlpanel

 SELECTED_USERNAME=
 SIP_CONFIG_FILE=/etc/sipwitch.conf
 ADMIN_USER=
+UPGRADE_SCRIPT_NAME="freedombone-upgrade"
 
 function any_key {
     echo ' '
     read -n1 -r -p "Press any key to continue..." key
 }
 
+function check_for_updates {
+    if [ ! -f /etc/cron.weekly/$UPGRADE_SCRIPT_NAME ]; then
+        dialog --title "Check for updates" \
+               --msgbox "Upgrade script was not found" 6 40
+        return
+    fi
+
+    clear
+    ./etc/cron.weekly/$UPGRADE_SCRIPT_NAME
+    any_key
+}
+
 function add_user {
     data=$(tempfile 2>/dev/null)
     trap "rm -f $data" 0 1 2 5 15
         trap "rm -f $data" 0 1 2 5 15
         dialog --backtitle "Freedombone Control Panel" \
                --title "Control Panel" \
-               --radiolist "Choose an operation:" 18 70 11 \
+               --radiolist "Choose an operation:" 19 70 12 \
                1 "Backup and Restore" off \
                2 "Show SIP Phone Extensions" off \
                3 "Reset Tripwire" off \
                6 "Email Filtering Rules" off \
                7 "Security Settings" off \
                8 "Hubzilla" off \
-               9 "Power off the system" off \
-               10 "Restart the system" off \
-               11 "Exit" on 2> $data
+               9 "Check for updates" off \
+               10 "Power off the system" off \
+               11 "Restart the system" off \
+               12 "Exit" on 2> $data
         sel=$?
         case $sel in
             1) exit 1;;
             6) menu_email;;
             7) security_settings;;
             8) menu_hubzilla;;
-            9) shut_down_system;;
-            10) restart_system;;
-            11) break;;
+            9) check_for_updates;;
+            10) shut_down_system;;
+            11) restart_system;;
+            12) break;;
         esac
     done
 }