tets
- 2017-05-27 Fixed category attachments for 3.7+ changes
- 2017-05-28 Another fix for category article list menu item
- 2017-07-12 Fixed issue with article selection
- 2017-07-13 Fixed issue with admin attachment list popups not working
- 2018-03-25 Added fixes to clean user inputs (fix SQL injection vulnerability)
- Tested with Joomla 3.8.6