Refactor employee and estimate models by removing redundant comments; update locale file to remove item references; delete unused QboItemTest file.

app/models/employee.rb

@@ -23,7 +23,6 @@ class Employee < ActiveRecord::Base
     return unless employees
     
     transaction do
-      # Update the item table
       employees.each { |e|
         logger.info "Processing employee #{e.id}"
         employee = 	find_or_create_by(id: e.id)

app/models/estimate.rb

@@ -56,7 +56,6 @@ class Estimate < ActiveRecord::Base
   
   # update an estimate
   def self.update(id)
-    # Update the item table
     qbo = Qbo.first
     estimate = qbo.perform_authenticated_request do |access_token|
       service = Quickbooks::Service::Estimate.new(:company_id => qbo.realm_id, :access_token => access_token)