Zabbix

.......... [DEV-3126] added new Selenium tests for TOTP functionality

* commit 'ddf2c0f700448ea5e3f0239fa5362cb190dc75fa': (57 commits)
  .......... [DEV-3126] optimized code after review
  .......... [DEV-3126] fixed indents according to previous approach
  .......... [DEV-3126] updated to __DIR__
  .......... [DEV-3126] fixedwhitespace
  .......... [DEV-3126] fixed after branch update
  .......... [DEV-3126] fix and refactor user login
  .......... [DEV-3126] referenced the correct status
  .......... [DEV-3126] move common onBefore code to parent class
  .......... [DEV-3126] PhpDoc fix
  .......... [DEV-3126] removed redundant backup table
  .......... [DEV-3126] broke comment in two line
  .......... [DEV-3126] fixed comment
  .......... [DEV-3126] rename digits to code length for more clarity
  .......... [DEV-3126] fixed method formatting
  .......... [DEV-3126] added whitespace
  .......... [DEV-3126] formatted phpdoc
  .......... [DEV-3126] fixed annotation whitespace
  .......... [DEV-3126] simplified Sign in button check
  .......... [DEV-3126] added check for empty value
  .......... [DEV-3126] small formatting
  ...

(cherry picked from commit 160ee5d5a228fbc5cc23e5c1455f9e2482ad46d1)