Slight bug in list of logs fixed

There was a small bug in the php script for the web page causing some jobs not to appear in the filtered list of job on the "All Logs" page although they did appear on the main page. This is now fixed. (Stupid strpos returns an integer that can be 0 if there is a match at the first character but false if there is no match. You have to use === or !=== to test it)