Fix enterprise ad title

Author: cdujeu

core/src/plugins/access.ajxp_conf/ajxp_confActions.xml

@@ -629,6 +629,7 @@
                         <div id="enterprise_advertise_block" box_width="70%" box_padding="0" box_height="80%" box_resize="true" style="height:100%;" class="vertical_layout">
                             <iframe style="width: 100%; height: 90%; border: 0px solid #ddd;" class="vertical_fit"></iframe>
                             <div style="padding:20px;">&nbsp;</div>
+                            <style>.form-enterprise_advertise_block .dialogTitle {display:none;}</style>
                         </div>
                     ]]></clientForm>
                 <clientListener name="init"><![CDATA[

core/src/plugins/access.ajxp_conf/src/ConfAccessDriver.php

@@ -430,7 +430,6 @@ public function displayEnterprise(ServerRequestInterface $requestInterface, Resp
                 file_put_contents($touchFile, time());
             }else{
                 $responseInterface = new JsonResponse(["display" => false]);
-                echo json_encode(["display" => false]);
             }
         }else{
             $responseInterface = new JsonResponse(["display" => true]);