Fix for start-up problem if WAR is NOT unpacked

Hi, in tests I'm currently doing on my upcoming Spring Boot + MariaDB4j branch with support for java -jar mifos.war, I've hit the "ERROR o.m.i.j.s.JobRegisterServiceImpl - Could not schedule job: Update Non Performing Assets java.lang.IllegalArgumentException: Code has no @CronTarget with this job name (@see JobName); seems like DB/code are not in line: Update Non Performing Assets" etc. and found out that this was because the CronMethodParser had a subtle bug preventing it from working if WAR is NOT unpacked - fixed by this.

OK to merge in?