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.

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To test just try with working extDB. 
Then remove extDB and try to launch server again.
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