New version of HESK: 3.5.2

[Klemen]

We are happy to announce HESK 3.5.2

This is primarily a bugfix release with some minor UI improvements.

----------------------------------------------------------------------------------------------------

HOW TO UPDATE:
1. Log in to your HESK admin panel
2. Go to "Settings" and click the "Check for updates" link
3. See available update options

----------------------------------------------------------------------------------------------------


==> Full Changelog
- you can now copy the customer email and IP address when viewing details from admin ticket
- when submitting a ticket from admin panel, the category assign settings are now used to select default owner
- added ticket subject tag for use in canned responses
- provide a way for customers to change their preferred default language
- fix: query searches by customer in replies can take a long time
- fix: SQL error when retrieving existing ticket IDs in MySQL strict mode
- fix: the "View all customers (but not manage them)" permission not showing customers
- fix: suppress admin panel submit a ticket PHP notices when Debug mode is activated
- fix: very long email IDs can be truncated when inserted into the database
- fix: allow additional characters in MySQL password
- fix: customer emails sent in default, not selected language
- fix: customer auto-login not working correctly in a specific case
- fix: preserve selected language when closing the email template edit modal
- fix: customer not always logged out automatically after password change