Updated mediawiki/extensions
Project: mediawiki/extensions/GettingStarted  dbafbefdccec89bed5a2f20187bef2dd1386f5ee
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Restyle using Munaf Assaf's CSS and add GuidedTour steps/tour.

* Remove bucketting.
* Add readme with instructions, dependency, and license (GPLv2+).
* Add jshint.
* Move remaining hook into GettingStarted.hooks.php.
* Move arrow into i18n message.

Change-Id: Ib13103adc2190b8ae5a39203af79f1ee87af4228