Minor Topic CSS tweaks

Summary: Cleans up the topic UI a little more, I think this feels nice for some reason.

Test Plan: visit a room with and without a topic, desktop, tablet, mobile

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D17711

resources/celerity/map.php

@@ -7,7 +7,7 @@
  */
 return array(
   'names' => array(
-    'conpherence.pkg.css' => '1b8422e1',
+    'conpherence.pkg.css' => 'a34d59bd',
     'conpherence.pkg.js' => '5f86c17d',
     'core.pkg.css' => '959330a2',
     'core.pkg.js' => 'deabcef7',
@@ -46,7 +46,7 @@ return array(
     'rsrc/css/application/config/setup-issue.css' => 'f794cfc3',
     'rsrc/css/application/config/unhandled-exception.css' => '4c96257a',
     'rsrc/css/application/conpherence/durable-column.css' => '89ea6bef',
-    'rsrc/css/application/conpherence/header-pane.css' => '92d50767',
+    'rsrc/css/application/conpherence/header-pane.css' => '6b2dadbe',
     'rsrc/css/application/conpherence/menu.css' => '88100764',
     'rsrc/css/application/conpherence/message-pane.css' => '14199428',
     'rsrc/css/application/conpherence/notification.css' => 'cef0a3fc',
@@ -553,7 +553,7 @@ return array(
     'config-options-css' => '0ede4c9b',
     'config-page-css' => 'c1d5121b',
     'conpherence-durable-column-view' => '89ea6bef',
-    'conpherence-header-pane-css' => '92d50767',
+    'conpherence-header-pane-css' => '6b2dadbe',
     'conpherence-menu-css' => '88100764',
     'conpherence-message-pane-css' => '14199428',
     'conpherence-notification-css' => 'cef0a3fc',