Added active toggle to webhooks

To allow easy temporary de-activation without deletion or other
workarounds. Updated tests to cover.

resources/lang/en/common.php

@@ -71,6 +71,9 @@ return [
     'list_view' => 'List View',
     'default' => 'Default',
     'breadcrumb' => 'Breadcrumb',
+    'status' => 'Status',
+    'status_active' => 'Active',
+    'status_inactive' => 'Inactive',
 
     // Header
     'header_menu_expand' => 'Expand Header Menu',