FIX: Update directory header to match core

This updates the parameters passed to the period-chooser, and makes sure the date displays as expected

javascripts/discourse/templates/users.hbs

@@ -1,11 +1,18 @@
 {{#d-section pageClass="users"}}
   {{#load-more selector=".user-card-directory .user-card-container" action=(action "loadMore")}}
     <div class="container">
-      <div class='directory'>
+      <div class="users-directory directory">
         {{plugin-outlet name="users-top" connectorTagName='div' args=(hash model=model)}}
         
-        <div class="filters">
-          {{period-chooser period=period onChange=(action (mut period))}}
+        <div class="directory-controls">
+          <div class="period-controls">
+            {{period-chooser period=period onChange=(action (mut period)) fullDay=false}}
+            {{#if lastUpdatedAt}}
+              <div class="directory-last-updated">
+                {{i18n "directory.last_updated"}}
+                {{lastUpdatedAt}}
+              </div>
+            {{/if}}
           </div>
           <div class="filters">            
             <span class="group-filter {{if group "active"}}">
@@ -18,6 +25,7 @@
               {{text-field value=nameInput placeholderKey="directory.filter_name" class="filter-name no-blur"}}
             </span>
           </div>
+        </div>
 
         {{#conditional-loading-spinner condition=model.loading}}
           {{#if userCards.length}}