Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  7d284c142bf2cf8872c2684abee2c44d9edd8030

Small collapser CSS tweaks

* Use flow-element-container to preserve right icon space
* Use margin instead of padding to push icons inwards from right (padding is
  part of the click hitbox)
* Make cursor a hand

Change-Id: Ie58ece6ec0b88de0c8722c91d463abbc4b16d842