Deleted commented out I/O stuff, placed local variables inside try
blocks to catch NumberFormatExceptions, modified table.sql field values
(i.e. book titles) in attempt to make display columns align
nicely...failed at that.
Modified checkOutItems() in ClerkUser so that clerk can input list of
{callnumber copyNo} items separated by commas.  No longer need to input
copyNo in checkOutItem() helper.
Merge branch 'fromRemoteGUI' into guipart

Conflicts (resolved):
	Project Part III/src/users/ClerkUser.java
	Project Part III/src/users/LibrarianUser.java