Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  97f6847aad04b05ae48c99fb71fce12311d8b886

Fixes cancel on reply form, and also standardizes cancel button markup

Cancel previously caused the form to submit, instead of disappear, sending the user to the topic page itself

Change-Id: I12c5d1eb651254151cf237f633c64fc25f97c589