added repository for elastic search and install elastic serach package

added wheezy backports repository
added script file to change password of user
fixed problems regarding special characters (UTF-8)

change_password

@@ -0,0 +1,38 @@
+#!/usr/bin/php
+<?
+set_include_path("../include");
+require("header.inc.php");
+
+if (empty($argv[1])) {
+	die("Usage: $argv[0] " . '$username $password' . "\n");
+}
+
+$username = $argv[1];
+$password = $argv[2];
+
+
+$docRoot = str_replace($_SERVER['SCRIPT_NAME'], '', __FILE__);
+
+echo $docRoot;
+
+
+echo "changing password for  user $username\n";
+
+$passwordhash = password_hash($password,  PASSWORD_DEFAULT);
+
+
+Zotero_DB::beginTransaction();
+
+	$sql = "SET NAMES UTF8;";
+	Zotero_DB::query($sql);
+
+        $sql = "UPDATE zotero_www.users SET password=? WHERE username=?";
+        Zotero_DB::query($sql, array($passwordhash,$username));
+
+Zotero_DB::commit();
+
+
+
+
+?>
+