Changes the dialog window that pops up for any exception to tell
the user to read Python's output (i.e. the stacktrace).
Also, handles the common failure of having too small a window and
trying to create a new ncurses dialog box. There is now a specific
failure message, so people know to make their terminal bigger.
-Tweaked email body wording
-Added To: field
-Added librarian@ as a recipient of reminder emails
-Added a confirmation that emails were sent
-Added ability to cancel email sending (by using cancel button)
-Added a nice confirmation dialog at the end of sending
reminder emails to keep the librarian's hopes up
- Pull out email generation into a new module so that the email
message itself can be tested.
- Add a "backdoor" for the email login screen that writes emails to
text files under test_emails/ instead of sending them.
- Add a GNU expect script to automate email reminder testing using
the above features.