Zabbix

A.FG...PST [ZBXNEXT-1096] implemented configurable per-item-type timeouts

Merge in ZBX/zabbix from feature/ZBXNEXT-1096-6.5-1 to master

* commit 'f12dd54c015c805175f2acd72fd76bcf78c55661': (137 commits)
  .......... [ZBXNEXT-1096] fixed indentation
  A......... [ZBXNEXT-1096,ZBXNEXT-8468] made proxy object extend using DB stored timeouts values before validation only when enabling custom timeouts
  A.F....... [ZBXNEXT-1096,ZBXNEXT-8468] fixed code style
  .......... [ZBXNEXT-1096] fixed mass update autotest
  ..F....... [ZBXNEXT-1096,ZBXNEXT-8468] made timeout field in item mass update hide if "Global" is selected
  ........S. [ZBXNEXT-1096] fixed code style
  ........S. [ZBXNEXT-1096] changed timeout validation
  ........S. [ZBXNEXT-1096] fixed validation of timeouts during item test
  ..F....... [ZBXNEXT-1096,ZBXNEXT-8468] fixed code style
  ........S. [ZBXNEXT-1096] fixed validation of 0 timeout value
  ..F....... [ZBXNEXT-1096,ZBXNEXT-8468] removed redundant validation rule
  ..F....... [ZBXNEXT-1096,ZBXNEXT-8468] fixed errors in browser console when deleting proxies from proxy list
  A.F....... [ZBXNEXT-1096,ZBXNEXT-8468] replaced timeout text field in item and item prototypes mass update forms with radio element and text field
  A.F....... [ZBXNEXT-1096,ZBXNEXT-8468] removed ability to set custom item timeout for SNMP agent items unless SNMP OID starts with "walk["
  A.F....... [ZBXNEXT-1096,ZBXNEXT-8468] updated comparisons for simple check items with vmware.* keys; improved code style
  ..F....... [ZBXNEXT-1096,ZBXNEXT-8468] reworked item timeout field
  ...G...... [ZBXNEXT-1096] fixed code style
  ...G...... [ZBXNEXT-1096] fixed code style
  .D........ [ZBXNEXT-1096,ZBXNEXT-8468] updated changelog
  .......... [ZBXNEXT-1096] added changelog
  ...