Comment 1 for bug 1418772

I've pushed a fix to working branch user/jeffdavis/lp1418772_error_on_null_create_date:

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=commitdiff;h=a400928

This fixes the issue in master, but the fix may not apply cleanly to earlier versions of EG, since copy_table.tt2 has changed since 2.6.