Zabbix

.......PS. [DEV-3798] changed atob output to uint8 array to prevent from using atob() to access internal/hidden object properties

Merge in ZBX/zabbix from feature/DEV-3798-5.0 to release/5.0

* commit '756feb37affa2424212f4f92d26353cf3f9e3252':
  .......PS. [DEV-3798] reworked buffer conversion in js methods expecting binary data
  .......PS. [DEV-3798] changed buffer parameter to call toString() for all objects except ArrayBuffer
  .......PS. [DEV-3798] replaced duk_to_string with duk_safe_to_string to avoid internal duktape exceptions when type coercion fails
  .......PS. [DEV-3798] fixed object support in parameters expecting data buffer
  .......PS. [DEV-3798] fixed warnings, removed duplicated code
  .......PS. [DEV-3798] fixed crash
  .......PS. [DEV-3798] fixed warning
  .......PS. [DEV-3798] fixed argument handling in sha256(), md5() and http request functiosn
  .......PS. [DEV-3798] updated embeded js md5,sha256 functions to accept arrays
  .......... [DEV-3798] fixed coding style
  .......PS. [DEV-3798] changed atob output to uint8 array to prevent from using atob() to access internal/hiddent object properties