Raise issue-categories name length-limit from 30 to 40 characters
I just needed this modification due to projects structure in Redmine and thought it might be usefull for some other users.
Note that this patch raises the maximum-length of a issue-category name from 30 characters to 40 characters. If the limit of 40 characters isn't sufficient modify the patch by replacing the instances of 40 to the desired maximum-length.
Warning: this patch can malform/break different views depending on your setup. I guess that is the main reason why issue-category names are limited to 30 characters by default.