Don't show Conpherence controls if not in a Conpherence

Summary: We currently try to build crumbs out even if the user has no membership in any. This removes these useless controls.

Test Plan: Leave all Rooms, see NUX state with no "Edit Room", blank title, or "Collapse Column" controls.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D16546

src/applications/conpherence/controller/ConpherenceController.php

@@ -59,12 +59,13 @@ abstract class ConpherenceController extends PhabricatorController {
     $viewer = $this->getViewer();
 
     $crumbs = $this->buildApplicationCrumbs();
+
+    if ($conpherence->getID()) {
       $data = $conpherence->getDisplayData($this->getViewer());
       $crumbs->addCrumb(
         id(new PHUICrumbView())
         ->setName($data['title'])
         ->setHref('/'.$conpherence->getMonogram()));
-
         $can_edit = PhabricatorPolicyFilter::hasCapability(
           $viewer,
           $conpherence,
@@ -100,6 +101,7 @@ abstract class ConpherenceController extends PhabricatorController {
         ->addSigil('conpherence-widget-toggle')
         ->setIcon('fa-columns')
         ->addClass('conpherence-header-desktop-item'));
+    }
 
     return hsprintf(
       '%s',