Updated mediawiki/extensions
Project: mediawiki/extensions/GWToolset  a62ed5633eb5efa7c9856f3d6dbc9592c92b8363

update-install-instructions

* updated the install instructions with information about add/remove
  group permissions for the gwtoolset group.
* moved the filebackend instructions that relate to LocalSettings.php
  under that section

Change-Id: Iec535980e5d587b319ee1871bbbc7e51a2226bd1