Add new message 'brackets' and use it to kill some hardcoded []s.

Change-Id: Idae8d9201d1c291316ab520d204ae8c5cde2d890

includes/ChangesList.php

@@ -874,8 +874,10 @@ class EnhancedChangesList extends ChangesList {
 			array_push( $users, $text );
 		}
 
-		$users = ' <span class="changedby">[' .
-			implode( $this->message['semicolon-separator'], $users ) . ']</span>';
+		$users = ' <span class="changedby">'
+			. $this->getContext()->msg( 'brackets' )->rawParams(
+				implode( $this->message['semicolon-separator'], $users )
+			)->plain() . '</span>';
 
 		$tl = '<span class="mw-collapsible-toggle mw-enhancedchanges-arrow"></span>';
 		$r .= "<td>$tl</td>";

includes/Linker.php

@@ -1641,9 +1641,9 @@ class Linker {
 	 * @return string
 	 */
 	public static function generateRollback( $rev ) {
-		return '<span class="mw-rollback-link">['
-			. self::buildRollbackLink( $rev )
-			. ']</span>';
+		return '<span class="mw-rollback-link">'
+			. wfMessage( 'brackets' )->rawParams( self::buildRollbackLink( $rev ) )->plain()
+			. '</span>';
 	}
 
 	/**

languages/messages/MessagesEn.php

@@ -4426,6 +4426,7 @@ Please confirm that you really want to recreate this page.",
 'ellipsis'            => '...', # only translate this message to other languages if you have to change it
 'percent'             => '$1%', # only translate this message to other languages if you have to change it
 'parentheses'         => '($1)', # only translate this message to other languages if you have to change it
+'brackets'            => '[$1]', # only translate this message to other languages if you have to change it
 
 # Multipage image navigation
 'imgmultipageprev' => '← previous page',

maintenance/language/messageTypes.inc

@@ -452,6 +452,7 @@ $wgOptionalMessages = array(
 	'ellipsis',
 	'percent',
 	'parentheses',
+	'brackets',
 	'autocomment-prefix',
 	'listgrouprights-right-display',
 	'listgrouprights-right-revoked',

maintenance/language/messages.inc

@@ -3321,6 +3321,7 @@ $wgMessageStructure = array(
 		'ellipsis',
 		'percent',
 		'parentheses',
+		'brackets',
 	),
 	'imgmulti' => array(
 		'imgmultipageprev',