Optimize index and fix delete older checks from hist

updater.php

@@ -0,0 +1,21 @@
+<?php
+echo "<h2>Updater of CheckServer</h2>";
+echo "<p>Connecting to database</p>";
+require_once 'connect.php';
+$version = dbw_query_fetch_array($db_conn,"SELECT value FROM SYS WHERE option = 'version'")[0];
+echo "<p>Your version: ".$version;
+echo "<p>Updating to lastest</p>";
+switch ($version){
+	case '0.9':
+		echo "<p>0.9->0.9.1<p>";
+		dbw_query($db_conn,"DELETE FROM SYS WHERE option='maxChecksSave'");
+		dbw_query($db_conn,"INSERT INTO SYS VALUES('maxTimeSave',14)");
+		//Can not delete USERS.SessionID because sqlite3 not supports it, but doesn't do any harm.
+
+	case '0.9.1':
+		echo "0.9.1-Lastest";
+		echo "<p>Updated to lastest. Close this and go to index</p>";
+		//Remove files on a good update
+		unlink('updater.php');
+		unlink('installer.php');
+}