This PR merely checks if the string is empty and displaying (only) a debug information to the debugger, at disposal of displaying a message box. I might implement such dynamic resource string to the CPL later in a next PR.
CORE-16654
CORE-16181
This allows preventing spamming the time servers if the registry entry
becomes corrupted or missing. Also, disallow a setting of less than
2 minutes for the same reasons, and instead use the fallback of 9 hours.