Handle empty subject lines in bootstrap

CHANGELOG.md

@@ -9,6 +9,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Fixed
 - Shutdown hang in retention scanner
+- Display empty subject as `(No Subject)`
 
 ## [1.1.0-rc1] - 2016-03-04
 ### Added

themes/bootstrap/public/mailbox.js

@@ -107,10 +107,17 @@ function onDocumentReady() {
   // Prevent search and resize handlers being called too often
   var searchDelay = makeDelay(200);
   var resizeDelay = makeDelay(100);
-  $.addTemplateFormatter("DateFormatter",
-      function(value, template) {
-        return moment(value).calendar();
-      });
+  $.addTemplateFormatter({
+    "date": function(value, template) {
+      return moment(value).calendar();
+    },
+    "subject": function(value, template) {
+      if (value == null || value.length == 0) {
+        return "(No Subject)";
+      }
+      return value;
+    }
+  });
   $("#message-list").hide();
   onWindowResize();
   $(window).resize(function() {

themes/bootstrap/templates/mailbox/index.html

@@ -15,9 +15,10 @@ $(document).ready(function() {
 <script type="text/html" id="list-entry-template">
   <button data-id="id" type="button" class="message-list-entry list-group-item">
     <div class="row">
-      <div class="col-sm-4 col-md-12 text-primary" data-content="subject"/>
+      <div class="col-sm-4 col-md-12 text-primary" data-content="subject"
+        data-format="subject"/>
       <div class="col-sm-4 col-md-12 small" data-content="from"/>
-      <div class="col-sm-4 col-md-12 small" data-content="date" data-format="DateFormatter"/>
+      <div class="col-sm-4 col-md-12 small" data-content="date" data-format="date"/>
     </div>
   </button>
 </script>