Zabbix

A.F....... [ZBXNEXT-2122] added new user role actions to control access to create and edit own and other user media

* commit '83723ffd5d94ef157379b048bfd1da0a6a011904':
  .......... [ZBXNEXT-2122] fixed Selenium regression tests
  ..F....... [ZBXNEXT-2122] fixed code style
  A......... [ZBXNEXT-2122] placed check for permissions to create and edit user media after validation of user parameters
  ..F....... [ZBXNEXT-2122] fixed inability to create new user if user has no permissions to create and edit user media
  ..F....... [ZBXNEXT-2122] fixed wrong media popup title and button being displayed when editing new media
  .D........ [ZBXNEXT-2122] added changelog file
  ..F....... [ZBXNEXT-2122] added ability to edit own media in User settings > Notifications for users of Zabbix user type; splitted CControllerPopupMedia into two controllers; added new actions
  A.F....... [ZBXNEXT-2122] added new user role actions to control user access to create and edit user media