removed "unloadable" declarations

They were causing circular dependency errors in development when
classes changed and had to be recompiled.  Turns out they're no longer
needed for Rails 4:

   thoughtbot/clearance#276
   thoughtbot/clearance#277

In development if I change one of the classes it recompiles, even
without the "unloadable" declaration, and I no longer get circular
dependency errors.

app/controllers/surveyor_controller.rb

@@ -1,6 +1,5 @@
 # Surveyor Controller allows a user to take a survey. It is semi-RESTful since it does not have a concrete representation model.
 # The "resource" is a survey attempt/session populating a response set.
 class SurveyorController < ApplicationController
-  unloadable
   include Surveyor::SurveyorControllerMethods
-end
+end

app/models/answer.rb

@@ -1,4 +1,3 @@
 class Answer < ActiveRecord::Base
-  unloadable
   include Surveyor::Models::AnswerMethods
 end

app/models/dependency.rb

@@ -1,4 +1,3 @@
 class Dependency < ActiveRecord::Base
-  unloadable
   include Surveyor::Models::DependencyMethods
 end

app/models/dependency_condition.rb

@@ -1,4 +1,3 @@
 class DependencyCondition < ActiveRecord::Base
-  unloadable
   include Surveyor::Models::DependencyConditionMethods
 end

app/models/question.rb

@@ -1,4 +1,3 @@
 class Question < ActiveRecord::Base
-  unloadable
   include Surveyor::Models::QuestionMethods
-end
+end

app/models/question_group.rb

@@ -1,5 +1,4 @@
 class QuestionGroup < ActiveRecord::Base
-  unloadable
   include Surveyor::Models::QuestionGroupMethods
 
 end

app/models/response.rb

@@ -1,5 +1,4 @@
 class Response < ActiveRecord::Base
-  unloadable
   include ActionView::Helpers::SanitizeHelper
   include Surveyor::Models::ResponseMethods
 end

app/models/response_set.rb

@@ -1,4 +1,3 @@
 class ResponseSet < ActiveRecord::Base
-  unloadable
   include Surveyor::Models::ResponseSetMethods
-end
+end

app/models/survey.rb

@@ -1,4 +1,3 @@
 class Survey < ActiveRecord::Base
-  unloadable
   include Surveyor::Models::SurveyMethods  
 end

app/models/survey_section.rb

@@ -1,5 +1,4 @@
 class SurveySection < ActiveRecord::Base
-  unloadable
   include Surveyor::Models::SurveySectionMethods
 end
 

app/models/survey_translation.rb

@@ -1,5 +1,4 @@
 class SurveyTranslation < ActiveRecord::Base
-  unloadable
   include Surveyor::Models::SurveyTranslationMethods
 end
 

app/models/validation.rb

@@ -1,4 +1,3 @@
 class Validation < ActiveRecord::Base
-  unloadable
   include Surveyor::Models::ValidationMethods
-end
+end

app/models/validation_condition.rb

@@ -1,4 +1,3 @@
 class ValidationCondition < ActiveRecord::Base
-  unloadable
   include Surveyor::Models::ValidationConditionMethods
 end