[#6446] ticket:400 added filtering for topics in api, test fail
[#6446] ticket:400 in forum api return only ok threads
[#6446] ticket:400 fixed test for showing only ok posts
[#6446] ticket:400 fixed topics display in forum api
[#6446] ticket:400 do not show not ok posts for other apis
[#6446] ticket:400 removed trailing whitespaces
[#6446] ticket:400 removed threads from forum json