Open requests being included in missed reservation e-mails

[orenyk]

From BMEC:

Just thought I'd bring this to your attention. It's not a HUGE problem, but in the interest of making Reservations as usable as possible, I thought you'd want to know that patrons receive emails from Reservations when unapproved (note, not rejected) reservation requests are missed. That is, if a patron requests a reservation and that reservation isn't approved or rejected by the start date of the request, they'll get a "missed reservation" email. This probably won't happen TOO often, but I thought it might be something you'd want to fix for aesthetics more than anything else.

We need to fix the query that is triggered in the missed reservation email task to disregard pending requests.