Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  8b48fdd67f33aaf725a290fd169922b1408c9dd0

G3: Add support for recursive progressiveEnhancement

The cancel button progressive enhancement moved inside the
topic reply form progressive enhancement requiring support
for recursive progressive enhancement.

Only supports one level of recursion for now.
When we need more levels we'll revisit this.

Change-Id: I593efd6fc9f886684e199b3611b8789e41c71365