Some more misc explicit interface implementations

'Fallout' from working on other things.

OpenRA.Mods.Common/Traits/Harvester.cs

@@ -105,7 +105,7 @@ namespace OpenRA.Mods.Common.Traits
 			self.QueueActivity(new CallFunc(() => ChooseNewProc(self, null)));
 		}
 
-		public void Created(Actor self)
+		void INotifyCreated.Created(Actor self)
 		{
 			if (Info.SearchOnCreation)
 				self.QueueActivity(new FindResources(self));
@@ -254,7 +254,7 @@ namespace OpenRA.Mods.Common.Traits
 			}
 		}
 
-		public void TickIdle(Actor self)
+		void INotifyIdle.TickIdle(Actor self)
 		{
 			// Should we be intelligent while idle?
 			if (!idleSmart) return;