some fixes to janitor trials, implemented jan trial controller test

app/models/user_feedback.rb

@@ -2,10 +2,15 @@ class UserFeedback < ActiveRecord::Base
   set_table_name "user_feedback"
   belongs_to :user
   belongs_to :creator, :class_name => "User"
+  before_validation :initialize_creator, :on => :create
   attr_accessible :body, :user_id, :is_positive
-  validates_presence_of :user_id, :creator_id, :body
+  validates_presence_of :user, :creator, :body
   validate :creator_is_privileged
   
+  def initialize_creator
+    self.creator_id = CurrentUser.id
+  end
+  
   def creator_is_privileged
     if !creator.is_privileged?
       errors[:creator] << "must be privileged"