fixed all tests

app/models/ban.rb

@@ -31,7 +31,7 @@ class Ban < ActiveRecord::Base
   def update_feedback
     if user
       feedback = user.feedback.build
-      feedback.is_positive = false
+      feedback.category = "negative"
       feedback.body = "Banned: #{reason}"
       feedback.creator_id = banner_id
       feedback.save

app/models/janitor_trial.rb

@@ -31,7 +31,7 @@ class JanitorTrial < ActiveRecord::Base
   
   def create_feedback
     user.feedback.create(
-      :is_positive => false,
+      :category => "negative",
       :body => "Demoted from janitor trial"
     )
   end