Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  b537125a9d5a98fc1f0a661fe4de05982832cd78

Repair warning on boards with no header

On a brand new flow board with no header ever created
the attempt to access revision.content.content will
issue a warning from lightncandy.

The check for revision.content.content, rather than
revision.content was so we can add a blank space when
its not available.  Without the &nbsp; the edit header
icon is mis-aligned.

This patch makes the &nbsp; always output, which is
perfect for the no-content step and shouldn't make any
difference when content exists.

Change-Id: I5bd71c70af8536e0222914133b31889b58381722