Wikia/app — pull request #1339 by macbre (2013-08-19 14:54:48+00:00)
Title: Improve performance of Wall code

This change reduces calls to WallHooksHelper::onLanguageGetNamespaces to just one. Used to be 200+ on pages with looooots of links.

* partially revert e5458fbb088cb
* remove AfterLanguageGetNamespaces custom hook
* use LanguageGetNamespaces hook which is called only once and then the result is cached

@themech - please review and merge