..F....... [DEV-533] improved code quality by renaming and improving function clearCookies(); no functional changes

git-svn-id: svn://svn.zabbix.com/trunk@47687 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
..F....... [ZBX-8509] Fix item custom multiplier formula default value to be "1" and not become unset when doing update without "Use custom multiplier" is not checked. Also make set multiplier value to "1" when disabling custom multiplier via massupdate.

git-svn-id: svn://svn.zabbix.com/trunk@47691 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
..F....... [ZBX-8471] Fix removing slides from slideshows in cases when some slides have been deleted and "holes" in step sequence are present.

git-svn-id: svn://svn.zabbix.com/trunk@47707 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
A......... [ZBX-8543] removed unnecessary PHP constants, deprecated the SPACE constant

git-svn-id: svn://svn.zabbix.com/trunk@47726 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
..F....... [DEV-535] improved code quality by removing deprecated get_request(); no functional changes

git-svn-id: svn://svn.zabbix.com/trunk@47729 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
.......... [ZBX-8424] Added missing changelog entry.

git-svn-id: svn://svn.zabbix.com/trunk@47734 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2