fixed live-coder answer issues

app/controllers/candidate_controller.rb

@@ -18,7 +18,7 @@ class CandidateController < ApplicationController
     redirect_to :summary and return if qid.nil?
 
     prep_question qid
-    @answer = Answer.new
+    @answer = @question.answer.nil? ? Answer.new : Answer.find(@question.answer_id)
   end
 
   def update_answer