comment styling

lms/static/coffee/src/discussion/views/thread_response_view.coffee

@@ -36,10 +36,14 @@ if Backbone?
     hideEditorChrome: ->
       @$('.wmd-button-row').hide()
       @$('.wmd-preview').hide()
+      @$('.wmd-input').css(height: '50px')
+      @$('.comment-post-control').hide()
 
     showEditorChrome: ->
       @$('.wmd-button-row').show()
       @$('.wmd-preview').show()
+      @$('.comment-post-control').show()
+      @$('.wmd-input').css(height: '125px')
 
     renderComments: ->
       comments = new Comments()
@@ -69,6 +73,7 @@ if Backbone?
       @setWmdContent("comment-body", "")
       comment = new Comment(body: body, created_at: (new Date()).toISOString(), username: window.user.get("username"), user_id: window.user.get("id"), id:"unsaved")
       view = @renderComment(comment)
+      @hideEditorChrome()
       @trigger "comment:add", comment
 
       DiscussionUtil.safeAjax

lms/static/sass/_discussion.scss

@@ -1484,12 +1484,28 @@ body.discussion {
 
     .comment-form {
       background: #eee;
+      @include clearfix;
 
       .comment-form-input {
         padding: 5px 10px;
         background-color: #fff;
         font-size: 14px;
       }
+
+      .discussion-submit-comment {
+        @include blue-button;
+        float: left;
+        margin-top: 8px;
+      }
+
+      .wmd-input {
+        height: 40px;
+      }
+
+      .discussion-errors {
+        margin: 0px;
+      }
+
     }
 
     p {