Changes

Regular is in quotes because ''all'' extensions modify the behavior and capabilities of MediaWiki. Those that are used by the WMF in their projects or are distributed in the official download should be considered stable, tested, and well-maintained. Extensions which are <span style="background:#90989e;">'unused' are grayed out</span>, to focus on the actual code being used. Unused means that the extension code is on the server, but not activated. This unused code will be removed as part of the general migration to QualityBox.