Fixed GCF #290
Fixed GCF #290

In the case of omni_config if the user decides not
to replace existing file, ask the user again to ensure
that they understand what happens before continuing.

plantigrade/geni-tools,tcmitchell/geni-tools,ahelsing/geni-tools,plantigrade/geni-tools,tcmitchell/geni-tools,ahelsing/geni-tools