[W521] false positive when SetString is used

Warn about invalid //FI comments

add an option to find all //FI comments that are no longer necessary

False positive W521 for record results even though the record is being fully initialized

Provide feedback on the number of messages during processing

OK Button should have a shortcut

Tab order is wrong in Config dialog

File filter should not prevent current unit from being processed

Config dialog should remember its position and size

still W511 false positivies (Object created in try block)