Add missing requires for feedback classes

src/coffee/controllers/feedback_controller.coffee

@@ -8,8 +8,8 @@ All rights reserved.
 $              = require 'jquery'
 BaseController = require './base_controller'
 EmailClient    = require '../models/email_client'
-w              = require 'when'
 _              = require 'underscore'
+w              = require 'when'
 {Duration}     = require '../constants'
 {Key}          = require '../constants'
 

src/coffee/models/email_client.coffee

@@ -5,7 +5,10 @@ Copyright (c) 2015 by Redwood Labs
 All rights reserved.
 ###
 
-require 'underscore'
+$    = require 'jquery'
+_    = require 'underscore'
+util = require 'util'
+w    = require 'when'
 
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