Following are the fixes which are checked in as part of this commit

1. New service method has been introduced to update quote slip emailed
flag within IbsQuoteSlipHeader when document generation is successful.
2. When referral task is being created (also transaction data being
saved), we will redirect to home page through MenuMB so that we
reinitialize beans.
3. Document generation methods will propagate exception to the caller so
that it is not lost