Zabbix

..F....... [ZBX-24369] fixed monitoring list pages' filters behavior after deleting filter parameters

* commit '6a819904d61d7e09cf30770635fa9a52e929dc16':
  ..F....... [ZBX-24369] removed redundant empty line
  ..F....... [ZBX-24369] improved code readability; updated descriptions for methods; fixed methods according to guidelines
  ..F....... [ZBX-24369] fixed monitoring list pages' filters behavior after deleting filter parameters

(cherry picked from commit 040b0ed1611239f3a09237958ddafafe94b3d25e)