fix contributions for pet states and items

dependent contributables would only count as contributed if their parent
was being contributed for the first time, too. the trick was to delay
actually *assigning* them to their parents until the very, very end

app/models/pet.rb

@@ -49,7 +49,6 @@ class Pet < ActiveRecord::Base
   def contributables
     contributables = [pet_type, @pet_state]
     items.each do |item|
-      item.handle_assets!
       contributables << item
       contributables += item.pending_swf_assets
     end

app/models/pet_type.rb

@@ -97,7 +97,6 @@ class PetType < ActiveRecord::Base
   
   def add_pet_state_from_biology!(biology)
     pet_state = PetState.from_pet_type_and_biology_info(self, biology)
-    self.pet_states << pet_state
     pet_state
   end
   

app/models/user.rb

@@ -17,10 +17,10 @@ class User < ActiveRecord::Base
         new_points += contribution.point_value
       end
     end
-    self.contributions += new_contributions
     self.points += new_points
     Pet.transaction do
       pet.save!
+      self.contributions += new_contributions
       save!
     end
     new_points