Ensure title sizes are consistent in users view

src/views/users.html

@@ -545,12 +545,12 @@
 <div class="content content-large">
 
   <div class="text-left">
-    <h2>
+    <h1>
       {{ 'users.title' | tr }}
       <button class="btn btn-primary btn-outline pull-right" ng-click="useradd.show()">
         <i class="fa fa-user-plus"></i> {{ 'users.newUserAction' | tr }}
       </button>
-    </h2>
+    </h1>
   </div>
 
   <div class="row">
@@ -629,12 +629,12 @@
   <br/>
 
   <div class="text-left">
-    <h2>
+    <h3>
       {{ 'users.groups.title' | tr }}
       <button class="btn btn-primary btn-outline pull-right" ng-click="groupAdd.show()">
         <i class="fa fa-plus"></i> {{ 'users.groups.newGroupAction' | tr }}
       </button>
-    </h2>
+    </h3>
   </div>
 
   <div class="card card-large">
@@ -675,7 +675,7 @@
   </div>
 
   <div class="text-left" style="margin-top: 50px;" ng-show="user.isAtLeastAdmin">
-    <h2>{{ 'users.settings.title' | tr }}</h2>
+    <h3>{{ 'users.settings.title' | tr }}</h3>
   </div>
 
   <div class="card card-large" ng-show="user.isAtLeastAdmin">
@@ -715,7 +715,7 @@
   </div>
 
   <div class="text-left" style="margin-top: 50px;" ng-show="user.isAtLeastAdmin">
-    <h2>Connect an External Directory</h2>
+    <h3>Connect an External Directory</h3>
     <!-- <h2>{{ 'users.externalLdap.title' | tr }}</h2> -->
   </div>
 
@@ -875,7 +875,7 @@
   </div>
 
   <div class="text-left" style="margin-top: 50px;" ng-show="user.isAtLeastAdmin">
-    <h2>User Directory Server</h2>
+    <h3>User Directory Server</h3>
   </div>
 
   <div class="card card-large" ng-show="user.isAtLeastAdmin">