Basket breakdown now passed across to SagePay
There appears to be a bug with MultiBooking mode and voucher codes that
causes the basket values not to match the total value. Can also be seen on
the Events Manager Checkout page. Otherwise working well with Single and
Multibooking modes with and without tax settings.
noop - code cleanup
Addition of Product id via event attributes
Allows stock reconciliation with Sage Pay, Sage 50 and others
Updating version info
Merge branch 'master' into v1.5.1

Conflicts:
	events-manager-pro-sage.php
Merge pull request #3 from andyplak/v1.5.1

V1.5.1