Conpherence - make the JS layer a bit better

Summary: this diff tries to polish the poo out of the JS layer while achieving fixes T3157 accolades.

Test Plan: introduced sleeps in the various controllers and clicked about. verified good "loading" UI in the menu / message / widget section as appropros. Loaded up in device size and resize and desktop sized and resized and all was good.

Reviewers: epriestley

Reviewed By: epriestley

CC: chad, aran, Korvin

Maniphest Tasks: T3164, T3157

Differential Revision: https://secure.phabricator.com/D6069

src/applications/conpherence/controller/ConpherenceViewController.php

@@ -70,7 +70,7 @@ final class ConpherenceViewController extends
       $form = null;
       $content = array('messages' => $messages);
     } else {
-      $header = $this->renderHeaderPaneContent();
+      $header = $this->buildHeaderPaneContent($conpherence);
       $form = $this->renderFormContent($data['latest_transaction_id']);
       $content = array(
         'header' => $header,
@@ -103,19 +103,10 @@ final class ConpherenceViewController extends
       ));
   }
 
-  private function renderHeaderPaneContent() {
-    $conpherence = $this->getConpherence();
-    $header = $this->buildHeaderPaneContent($conpherence);
-    return hsprintf('%s', $header);
-  }
-
-
   private function renderMessagePaneContent(
     array $transactions,
     $oldest_transaction_id) {
 
-    require_celerity_resource('conpherence-message-pane-css');
-
     $scrollbutton = '';
     if ($oldest_transaction_id) {
       $scrollbutton = javelin_tag(