Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  9ad6751513d71db26d0e3ba83178b582fc877a66

POST actions can also be rendered

e.g.: 'reply' is a POST action; 'view' is a GET actions.
When submitting a reply, canSubmit will first be run (on 'reply'),
then the reply will be submitted, when we'll be redirected to 'view',
which will pass canRender.
When a reply fails, however (e.g. flagged by spamfilter), canRender
will be run on 'reply' (because we did not get redirected), which
will return false (reply is no GET action). This will cause a
InvalidActionException to be thrown (in View.php). Instead, we would
still like to actually render the output, which will include an
error message saying why the reply failed.

Change-Id: I317159a51eb31933a6265a52d8240e534d8bf580