Hide email input on admin when disabled

data/templates/admin.html

@@ -120,6 +120,7 @@
                                     <select class="form-control" id="minutes" name="minutes">
                                     </select>
                                 </div>
+                                {% if email_enabled %}
                                 <div class="form-group">
                                     <label for="send_to_address">Send invite to address</label>
                                     <div class="input-group">
@@ -131,6 +132,7 @@
                                         <input type="email" class="form-control" placeholder="example@example.com" id="send_to_address" disabled>
                                     </div>
                                 </div>
+                                {% endif %}
                                 <button type="submit" id="generateSubmit" class="btn btn-primary">Generate</button>
                         </form>
                     </div>