Zabbix

A.F.I...S. [ZBXNEXT-2406] implemented service problem root cause analysis

Merge in ZBX/zabbix from feature/ZBXNEXT-2406-5.5 to master

* commit '81bc885bc1277c17c4ee1694a8bdefc8638607cf': (53 commits)
  ..F....... [ZBXNEXT-2406] fixed translation string
  ....I..... [ZBXNEXT-2406] fixed default database data for user roles #2
  ..F....... [ZBXNEXT-2406] improved user experience in service editing popup #3
  ....I..... [ZBXNEXT-2406] fixed default database data for user roles
  ..F....... [ZBXNEXT-2406] improved user experience in service editing popup #2
  ..F....... [ZBXNEXT-2406] improved user experience in service editing popup
  ..F....... [ZBXNEXT-2406] fixed code style
  ..F....... [ZBXNEXT-2406] fixed the default tag operator in service filter
  ..F....... [ZBXNEXT-2406] implemented child search and list length limit in Service form (partial commit #3)
  ..F....... [ZBXNEXT-2406] implemented child search and list length limit in Service form (partial commit #2)
  ..F....... [ZBXNEXT-2406] fixed style files permission
  ..F....... [ZBXNEXT-2406] fixed inline filter styles
  ..F....... [ZBXNEXT-2406] implemented child search and list length limit in Service form (partial commit)
  ..F....... [ZBXNEXT-2406] fixed request type for service.create controller
  ..F....... [ZBXNEXT-2406] fixed coding style
  ..F....... [ZBXNEXT-2406] fixed coding style
  ..F....... [ZBXNEXT-2406] fixed coding style
  ..F....... [ZBXNEXT-2406] removed unused code
  ..F....... [ZBXNEXT-2406] fixed service editor exceeding max input variables
  ..F....... [ZBXNEXT-2406] added JSON request content type support to the controllers
  ...