Set untitled Conpherences to '[No Title]' so users change them

Summary: This mainly affects crumbs, makes it more clear that the Conpherence doesn't have a set title.

Test Plan: Clear a title, see [No Title]

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D6099

src/applications/conpherence/controller/ConpherenceController.php

@@ -58,7 +58,7 @@ abstract class ConpherenceController extends PhabricatorController {
     if ($conpherence->getTitle()) {
       $title = $conpherence->getTitle();
     } else {
-      $title = pht('Conpherence');
+      $title = pht('[No Title]');
     }
     $crumbs->addCrumb(
       id(new PhabricatorCrumbView())