Zabbix

A.F....... [ZBXNEXT-3035] fixed lld override validation and visualization; fixed discover control in prototype edit forms

* commit '69a980ff7ac3eabc10028531fd2d36521685e71a': (39 commits)
  .D........ [ZBXNEXT-3035,ZBXNEXT-5827] added changelog entry
  ..F....... [ZBXNEXT-3035,ZBXNEXT-5827] fixed inline styles, field trimming, new filter formulaid, unnecessary filter formula beeing sent to API
  A......... [ZBXNEXT-3035,ZBXNEXT-5827] minor coding style improvements
  A......... [ZBXNEXT-3035,ZBXNEXT-5827] removed unused second parameter in the CDiscoveryRule::validateOverrides() method
  A......... [ZBXNEXT-3035,ZBXNEXT-5827] removed unused second parameter in the CDiscoveryRule::validateOverrides() method
  A......... [ZBXNEXT-3035,ZBXNEXT-5827] minor refactoring of the validation rules
  A......... [ZBXNEXT-3035,ZBXNEXT-5827] fixed firmatting of the SQL query
  A......... [ZBXNEXT-3035,ZBXNEXT-5827] fixed undefined index in condition validator
  A......... [ZBXNEXT-3035,ZBXNEXT-5827] fixed undefined index during template import
  A......... [ZBXNEXT-3035,ZBXNEXT-5827] fixed deletion of templates that belong to LLD override operations
  ..F....... [ZBXNEXT-3035,ZBXNEXT-5827] fixed link new tempaltes multiselect beeing disabled in lld overrides
  ..F....... [ZBXNEXT-3035,ZBXNEXT-5827] fixed empty history and trends processing in lld override operations
  A......... [ZBXNEXT-3035,ZBXNEXT-5827] fixed validation rules for operations.ophistory.history and operations.optrends.trends to support zeroes
  A......... [ZBXNEXT-3035,ZBXNEXT-5827] moved validation code for operations.ophistory.history and operations.optrends.trends to the common validation rules
  ..F....... [ZBXNEXT-3035,ZBXNEXT-5827] fixed undefined index in item form
  A......... [ZBXNEXT-3035,ZBXNEXT-5827] implemented a different way of handling templated overrides
  ..F....... [ZBXNEXT-3035,ZBXNEXT-5827] fixed display of overrides for templated discovery rules
  ..F....... [ZBXNEXT-3035,ZBXNEXT-5827] changed radio buttons of "Discover" to checkboxes in prototypes
  ..F....... [ZBXNEXT-3035,ZBXNEXT-5827] fixed fatal error
  ..F....... [ZBXNEXT-3035,ZBXNEXT-5827] minor code refactoring
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