#15 Support custom subject/body for scheduled emails

[Jasper Rosenberg]

We needed the ability to have more descriptive subject
lines and bodies for our scheduled report emails.

It was a pretty simple enhancement (just passing the
subject/body down to the scheduled report job via the
ReportSchedule.)

Note, that this would break old schedules as the old
ReportSchedule object would not be deserializable.
(though this can be fixed by setting the
serialVersionUID since only fields have been added).

A futher enhancement to this would be to allow
tokens/parameters in the subject line and body that
were evaluated when the scheduled job was run.

-Jasper

[Jasper Rosenberg]

Patch to allow setting a custom subject line and body text for a scheduled report