Issue Tracker 1.6.7

# Fix update of alias if one of the alternative formats chosen.

~ Change system plugin to use default notification values in synchronised users.

# Correct logic on call to message sending when alternative alias type used.

+ Complete implementation of access level controls upon custom fields.

~ Prevent error message in log about SMS configuration if we are not sending SMS anyway!

# Progress record update message not clear enough and missing issue number in log.

+ Add ability to specify custom fields in message template bodies.

~ Increase size of message template subject line to 64 characters.

+ Add ability to send an auto-close message to the user when an issue is auto closed by the cron task.

+ If Joomla user profile is enabled and phone number is a valid specification, synchronise with it_people table in system plugin.

+ Add alternative alias formats support to cron email fetch tasks.

# Correct a couple of malformed language strings. Clean up unused language strings.

+ Add check feature for issue identifier notification setting when an issue is edited/created by an issue admin/staff in the front end.

+ Add additional check in autoclose task to ensure that closed status and customer waiting status are not identical.

+ New message template for Issue Summary Report.

+ New message template for Issue Overdue Report.