event manager: add IP blocked trigger

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

templates/webadmin/eventrule.html

@@ -183,7 +183,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
                 </div>
             </div>
 
-            <div class="card bg-light mb-3">
+            <div class="card bg-light mb-3 trigger trigger-fs trigger-provider trigger-schedule">
                 <div class="card-header">
                     <b>Name filters</b>
                 </div>
@@ -543,6 +543,9 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
             case 3:
                 $('.trigger-schedule').show();
                 break;
+            case '4':
+            case 4:
+                break;
             default:
                 console.log(`unsupported event trigger type: ${val}`);
         }