Updated mediawiki/extensions Project: mediawiki/extensions/GettingStarted afb9636853d4c03a584739850219a89078006ac1
Updated RuboCop to the latest version
Also regenerated .rubocop_todo.yml file and updated .rubocop.yml with
recommended base configuration.
https://www.mediawiki.org/wiki/Manual:Coding_conventions/Ruby#Base_confi
guration
Change-Id: I6653692e6638ded4fc7fa6f00b07cb4bc837f82a