Add-ons Tickets 2.6.4

• Require Standard Library v1.5.0+, as this implements the template filter replacevalue
• Support 64bit xf_ip.ip_id column.
• Support linking a ticket category to a resource category.
• Add Sort button to ticket priority and status lists.
• Add spam cleaner support.
• Fixes inactive priorities/statuses could be assigned to a ticket on edit.
• Fixes the "Alerts are sent when a ticket transitions to this status" flag was not respected
• Fixes editing a ticket's title to a falsy value.

• Add support for value pruning for fields that are editable only once.
• Force global namespace for functions which are known to be optimizable to bytecode in php, or known global functions to avoid a current namespace lookup for the function.
• Implement warnings for ticket messages.
• Fix incorrect column definition for match types on ticket fields.
• Fix API missing permission check for setting prefix on a ticket.
• Fix ticket discussion threads would not correctly attach to a ticket. Installer will resync desync'ed ticket/discussion thread pairs.
• Don't show flash message when rerouting the contact form.
• Don't duplicate captcha display when a guest is creating a ticket.

• Add ability to ban specific emails from Ticket system.
• Add "shadow ban" feature, by an explicit email list or for tickets which contain too few words.
• Add ability to copy ticket user's email to clipboard, if the visitor can see it.
• Add additional filters for showing tickets based on whether they are unassigned, assigned to self or assigned to others.
• Fix an issue with BB code rendering when using predefined responses.
• Ensure the captcha displays when replying or creating a ticket.
• Fix non-functional draft support for new tickets.
• Improve behaviour of various input fields whilst using RTL languages.