[advancedcontentfilter] Clear rule cache anytime rules are changed in the database

- This was preventing updated rules from being applied immediately as the cached rules were still in effect

advancedcontentfilter/advancedcontentfilter.php

@@ -361,6 +361,8 @@ function advancedcontentfilter_post_rules(ServerRequestInterface $request)
 
 	$rule = DBA::selectFirst('advancedcontentfilter_rules', [], ['id' => DBA::lastInsertId()]);
 
+	DI::cache()->delete('rules_' . local_user());
+
 	return json_encode(['message' => DI::l10n()->t('Rule successfully added'), 'rule' => $rule]);
 }
 
@@ -390,6 +392,8 @@ function advancedcontentfilter_put_rules_id(ServerRequestInterface $request, Res
 		throw new HTTPException\ServiceUnavailableException(DBA::errorMessage());
 	}
 
+	DI::cache()->delete('rules_' . local_user());
+
 	return json_encode(['message' => DI::l10n()->t('Rule successfully updated')]);
 }
 
@@ -411,6 +415,8 @@ function advancedcontentfilter_delete_rules_id(ServerRequestInterface $request,
 		throw new HTTPException\ServiceUnavailableException(DBA::errorMessage());
 	}
 
+	DI::cache()->delete('rules_' . local_user());
+
 	return json_encode(['message' => DI::l10n()->t('Rule successfully deleted')]);
 }