Merge pull request #5705 from discourse/new_webhooks

FEATURE: Webhook for group and category events

db/fixtures/007_web_hook_event_types.rb

@@ -12,3 +12,13 @@ WebHookEventType.seed do |b|
   b.id = WebHookEventType::USER
   b.name = "user"
 end
+
+WebHookEventType.seed do |b|
+  b.id = WebHookEventType::GROUP
+  b.name = "group"
+end
+
+WebHookEventType.seed do |b|
+  b.id = WebHookEventType::CATEGORY
+  b.name = "category"
+end