(bug 42173) Standardize categories special pages output

This change removes namespace prefix from [[Special:UncategorizedCategories]],
so the output is consistent with the other categories pages.

Change-Id: I033e570754ca81be900a1f5482b8429583ab9172

RELEASE-NOTES-1.21

@@ -71,6 +71,7 @@ production.
   actually sorted.
 * (bug 2865)  User interface HTML elements don't use lang attribute
   (completed the fix by adding the lang attribute to firstHeading)
+* (bug 42173) Removed namespace prefixes on Special:UncategorizedCategories.
 
 === API changes in 1.21 ===
 * prop=revisions can now report the contentmodel and contentformat, see docs/contenthandler.txt

includes/specials/SpecialUncategorizedcategories.php

@@ -31,4 +31,17 @@ class UncategorizedCategoriesPage extends UncategorizedPagesPage {
 		parent::__construct( $name );
 		$this->requestedNamespace = NS_CATEGORY;
 	}
+
+	/**
+	 * Formats the result
+	 * @param $skin The current skin
+	 * @param $result The query result
+	 * @return string The category link
+	 */
+	function formatResult ( $skin, $result ) {
+		$title = Title::makeTitle( NS_CATEGORY, $result->title );
+		$text = $title->getText();
+
+		return Linker::linkKnown( $title, htmlspecialchars( $text ) );
+        }
 }