Fix situation in which event propagation was not working properly for structures

gui/builtinAdditionPanes/boosterView.py

@@ -131,6 +131,7 @@ class BoosterView(d.Display):
         fit = sFit.getFit(fitID)
 
         if not fit or fit.isStructure:
+            event.Skip()
             return
 
         trigger = sFit.addBooster(fitID, event.itemID)

gui/builtinAdditionPanes/droneView.py

@@ -210,6 +210,7 @@ class DroneView(Display):
         fit = sFit.getFit(fitID)
 
         if not fit or fit.isStructure:
+            event.Skip()
             return
 
         trigger = sFit.addDrone(fitID, event.itemID)

gui/builtinAdditionPanes/implantView.py

@@ -152,6 +152,7 @@ class ImplantDisplay(d.Display):
         fit = sFit.getFit(fitID)
 
         if not fit or fit.isStructure:
+            event.Skip()
             return
 
         trigger = sFit.addImplant(fitID, event.itemID)