using flush() here is pointless as we render the layout into a memory buffer and actually transmit the data later
remove confusing 'automatic logon rejected' message, fix #8591
Merge pull request #10293 from owncloud/fix-headers-being-sent

using flush() here is pointless as we render the layout into a memory bu...
Merge pull request #10302 from owncloud/remove-logon-rejected

remove confusing 'automatic logon rejected' message, fix #8591
[tx-robot] updated from transifex