Move new post button handler to DiscussionRouter.

lms/static/coffee/src/discussion/discussion_router.coffee

@@ -14,6 +14,9 @@ if Backbone?
 
         @newPostView = new NewPostView(el: $(".new-post-article"), collection: @discussion)
         @nav.on "thread:created", @navigateToThread
+        @newPost = $('.new-post-article')
+        $('.new-post-btn').bind "click", @showNewPost
+        $('.new-post-cancel').bind "click", @hideNewPost
 
     allThreads: ->
       @nav.updateSidebar()
@@ -43,3 +46,10 @@ if Backbone?
 
     navigateToAllThreads: =>
       @navigate("", trigger: true)
+
+    showNewPost: (event) =>
+      @newPost.slideDown(300)
+      $('.new-post-title').focus()
+
+    hideNewPost: (event) =>
+      @newPost.slideUp(300)

lms/static/js/discussions-temp.js

@@ -55,8 +55,6 @@ $(document).ready(function() {
 	// $topicDrop.bind('click', setTopic);
 	$formTopicDropBtn.bind('click', showFormTopicDrop);
 	$formTopicDropMenu.bind('click', setFormTopic);
-	$('.new-post-btn').bind('click', newPost);
-	$('.new-post-cancel').bind('click', closeNewPost);
 
 	$body.delegate('[data-tooltip]', {
 		'mouseover': showTooltip,
@@ -266,15 +264,6 @@ function setTopic(e) {
 	showBrowse();
 }
 
-function newPost(e) {
-	$newPost.slideDown(300);
-	$('.new-post-title').focus();
-}
-
-function closeNewPost(e) {
-	$newPost.slideUp(300);	
-}
-
 function showFormTopicDrop(e) {
 	$formTopicDropBtn.addClass('is-dropped');
 	$formTopicDropMenu.show();