Fix for extDB Check @ Server Init

Just fixing what i broke last time..

I moved exitWith inside a if statement codeblock.
So if extDB error encountered, it would exit outof just the if statement instead of the init script.
Just means more confusing errors in server rpt logs.

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To test code.
Just try with working extDB, then remove extDB and try to launch server again.
I also added some extra diag_log outputs to server rpt log and an extDB version check aswell.

If someone test this to make sure it works ok, Didn't test the code thanks