Update advsearchutil.class.php

Replace getMicroTime method with standart PHP microtime. getMicroTime was deleted in modx 2.3
Added translations for Romanian and Russian languages
Replaced the call to modx->getMicroTime() with microtime(true)
Merge pull request #73 from whitebyte/Development

Update advsearchutil.class.php
Merge pull request #75 from vundicind/Development

Added translations for Romanian and Russian languages