plugin: orphaned hooks weren't deleted.

update: fixing update job for tags.

update.php

@@ -1,6 +1,6 @@
 <?php
 
-define( 'UPDATE_VERSION' , 1159 );
+define( 'UPDATE_VERSION' , 1162 );
 
 /**
  *
@@ -1430,3 +1430,12 @@ function update_1160() {
 
 	return UPDATE_SUCCESS;
 }
+
+function update_1161() {
+	$r = q("ALTER TABLE `pconfig` ADD INDEX (`cat`)");
+
+	if(!$r)
+		return UPDATE_FAILED;
+
+	return UPDATE_SUCCESS;
+}