Remove btn-flat to convert to round buttons (first pass)

Convert col-xs-* to just col-* as part of bootstrap v3 -> v4
Convert box-* -> card-* as part of bootstrap v3 -> v4
Moved domain actions on main dashboard to a dropdown menu to avoid clutter
Added "Log Out" to top header left
Hid OTP on admin edit user to only show the disable card & options if the user account has OTP enabled

powerdnsadmin/templates/admin_manage_user.html

@@ -23,8 +23,9 @@
   </div>
 {% endblock %} {% block content %}
 <section class="content">
+  <div class="container-fluid">
     <div class="row">
-        <div class="col-xs-12">
+        <div class="col-sm-12">
             <div class="card">
                 <div class="card-header with-border">
                     <h3 class="card-title">User Management</h3>
@@ -96,6 +97,7 @@
         <!-- /.col -->
     </div>
     <!-- /.row -->
+    </div>
 </section>
 {% endblock %}
 {% block extrascripts %}