Zabbix

..F....... [DEV-2472] fixed xss vulnerability in graph item properties

* commit '05a47ba346bde460d2672d58c8d9750e0096ae95':
  ..F....... [DEV-2472] fixed undefined index error
  ..F....... [DEV-2472] reverted accidentally removed code
  ..F....... [DEV-2472] fixed user input encoding in graph edit form
  ..F....... [DEV-2472] fixed error reporting in graph edit form
  ..F....... [DEV-2472] fixed undefined index error in graph edit form
  ..F....... [DEV-2472] fixed double error message
  ..F....... [DEV-2472] fixed color validation
  ..F....... [DEV-2472] fixed color validation
  ..F....... [DEV-2472] fixed coding style
  ..F....... [DEV-2472] fixed xss vulnerability in graph item properties