[Koha] Can't specify due date/renewal due date in 16.05

[Mark Alexander]

Excerpts from King, Fred's message of 2016-11-18 09:43:33 -0500:
> Yesterday I upgraded Koha from 3.20 to 16.05, on Ubuntu 14.04LTS. Now we can't specify a due date for either checkouts or renewals. When we use the calendar to click on a date nothing happens; when we try to put in a date using the format 2016-12-30 I get an error message "Please enter a valid date (should match yyyy-mm-dd)." SpecifyDueDate is set to Allow.
> 
> Any ideas? I've run out of them here.

It sounds like this bug: https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=17524