Centralize how canned responses are formatted
Add ability to quote original and last messages as a canned response

Fixes #980

Retire canned response append checkbox on ticket reply.

Reviewed-By: Jared Hancock <jared@osticket.com>

Help Topics improved

Reviewed-By: Peter Rotich <peter@osticket.com>

Correctly generate ticket_link for message confirm

Reviewed-By: Peter Rotich <peter@osticket.com>

dept: Allow saving of various alert recipient opts

Reviewed-By: Peter Rotich <peter@osticket.com>

As previously implemented, only "Department and group members" could be set

forms: Ensure the issue summary will have data

Reviewed-By: Peter Rotich <peter@osticket.com>

Fix a couple issues on page management

Reviewed-By: Peter Rotich <peter@osticket.com>

redactor: Upgrade to version 9.2.4

Reviewed-By: Peter Rotich <peter@osticket.com>

Otherwise, no column will be added to the %ticket__cdata table and the
ticket queue pages will be crashed (empty).

Use the topic associated with the email if any, and the topic defined as the
system default as the last resort. In either case, the form associated with
the help topic will be added to the ticket, but no data will be put into the
form fields.

user: Fix variable replacement for %{ticket.user}

Reviewed-By: Peter Rotich <peter@osticket.com>

Update class.mailparse.php function splitHeaders

Reviewed-By: Peter Rotich & Jared 

The default mode going forward will be to insert when Rich Text support is
enabled and append otherwise. To clear the draft the user can simply click
reset or delete draft icon on the bar.

Enable delete draft option on reply & internal note boxes for consistency.