A.F....... [ZBX-1357] updated Japanese translation; thanks to Zabbix translators

git-svn-id: svn://svn.zabbix.com/trunk@51339 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
.D........ [ZBX-1357] add and update changelog entries on translations

git-svn-id: svn://svn.zabbix.com/trunk@51340 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2