Editor: Replace "Xyz Blood" check boxes in NPC and Creature records with "Blood Type" combo box
We currently use two check boxes for the different blood types in vanilla Morrowind. These can be set independent from each other. However, a creature or an NPC may only have one blood type. With this feature, we should introduce a new "Blood Type" combo box which combines the abovementioned "Skeleton Blood (White)" and "Metal Blood (Golden)" check boxes and adds a default option: "Default (Red)".
(RM-3751 from redmine: created on 2017-02-15 by Martin Otto, , closed on 2017-02-16 by Martin Otto)