Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  eed459f5860131c0a4d3cccf90ce3dd2c7b3f915

i18n: consistency tweaks

* cannot
* make lowercase in "flow-topic-comments"

Follow-up To: I36112a23a1c9ea4de53979ff3cd8238952a1b715

Change-Id: If9b63b193390b41045841eaee504e153cf100082