Zabbix

..F.....S. [ZBXNEXT-5124,ZBX-15827] extended preprocessing steps with final result row; improved input validation in preprocessing steps

* commit 'b0aa9ec70687c15167a5d3c1fd7416a12237017f': (27 commits)
  .......... [ZBX-15827,ZBXNEXT-5124] fixed changelog
  .......... [ZBX-15827,ZBXNEXT-5124] fixed changelog
  .......... [ZBX-15827,ZBXNEXT-5124] fixed changelog
  ..F....... [ZBXNEXT-5124,ZBX-15827] removed unexplainable click on action link elements once preprocessing results are received
  ..F....... [ZBXNEXT-5124,ZBX-15827] fixed error displaying in preprocessing steps test dialog when test is performed with invalid previous value
  ..F....... [ZBX-15827] made 'test all steps' button visible starting from 1 preprocessing step
  ..F....... [ZBX-15827,ZBXNEXT-5124] fixed coding style
  ..F....... [ZBX-15827,ZBXNEXT-5124] implemented final result handling in frontend preprocessing test dialog
  .......PS. [ZBX-15827] fixed crash in case of timeout
  ...G...PS. [ZBX-15827] fixed "null pointer passed as argument" error
  ...G...PS. [ZBX-15827] fixed "shadows a previous local" warning
  ...G...PS. [ZBX-15827] fixed may be used uninitialized warning
  ...G...PS. [ZBX-15827] fixed indentation
  ...G...PS. [ZBX-15827] reduced number of variables
  ...G...PS. [ZBX-15827] removed redundant variable initialization
  ...G...PS. [ZBX-15827] fixed key parsing not to allow null and boolean
  .......... [ZBX-15827] fixed memory leaks in cmocka tests
  ........S. [ZBX-15827] fixed memory leak when parsing incomplete test requests
  .......PS. [ZBX-15827] refactored json parsing api to return json object type instead of is_null flag
  ........S. [ZBX-15827] added tests for preprocessing testing
  ...

(cherry picked from commit bff82423f01f1b965b2a564819851f8f151d13f9)