Zabbix

A.F....... [ZBX-15416] fixed locale validation in user create and update API methods

* commit 'f48d8681ceec0a157cef9dd065d46ddbe60e2184':
  .D........ [ZBX-15416] updated changelog
  A.F....... [ZBX-15416] fixed locale validation in user create and update API methods
  .......... [ZBX-15416] updated PHP doc for initLocales()
  ..F....... [ZBX-15416] replaced CApiUser by array of default language; removed definition of unused locale variable for CWebUser
  A.F....... [ZBX-15416] fixed language validation in user API; fixed undefined index error in API calls on Windows hosted instances
  .......... [ZBX-15416] created development branch for 4.0+