Verification reporting: Consider Missing Conditions report as duplicate with Conflict/Subsumption

If a row is missing a condition in most cases it also either conflicts or is subsumptant with the other rows. This can quickly fill the reporting panel with Conflict issue reports.

To fix this it would be good to use a variable in V&V Preferences that blocks Conflict reporting when conditions are missing. This setting should be on by default, but the user can drown in his own issue reports and disable it when he wants.