Some fixes and cleanups

+ This commit fixes a bug associated with the loss of widgets on the home page (`welcome` view) *Cerber Theme*
+ Convert Admin Autocomplete Controller to Unix format 
+ Convert to Unix format:
  + `modules/gleez/classes/datatables.php`
  + `modules/gleez/classes/filter.php`
  + `modules/gleez/classes/gleez/config.php`
  + `modules/gleez/classes/gleez/datatables.php`
  + `modules/gleez/classes/gleez/filter.php`
  + `modules/gleez/classes/gleez/shortcode.php`
  + `modules/gleez/classes/shortcode.php`
  + `modules/gleez/media/css/popup.css`
  + `modules/gleez/media/js/gleez.ajaxform.js`
  + `modules/gleez/media/js/gleez.popup.js`
  + `modules/gleez/media/js/jquery.browser.js`
  + `modules/gleez/views/widgets/shortcuts.php`
  + `modules/user/views/admin/permission/role.php`
  + `modules/user/views/admin/permission/user.php`
+ Amended PHPDoc
+ In the above files сleaned spaces (whitespaces &rarr; tabs)

---------

P.S. The results of checking these files were identified using the following command
```sh
# convert files to Unix format (CRLF to LF)
find . -type f -exec dos2unix {} \;
```