Add the maincontent-l-r wrapper

The #maincontent-l-r is the center column (primary page content) in the UAB style.
Used it to wrap the MW #content div which is where it stores the primary page
content.

skins/UabVector.php

@@ -475,6 +475,8 @@ class UabVectorTemplate extends QuickTemplate {
 		<div id="whitebox-shadow">
                 <!-- whitebox -->
                 <div id="whitebox">
+		<!-- maincolumn-l-r -->
+                <div id="maincolumn-l-r">
 		<!-- content -->
 		<div id="content" <?php $this->html('specialpageattributes') ?>>
 			<a id="top"></a>
@@ -531,6 +533,8 @@ class UabVectorTemplate extends QuickTemplate {
 			<!-- /bodyContent -->
 		</div>
 		<!-- /content -->
+                </div>
+                <!-- /maincolumn-l-r -->
 		<!-- header -->
 		<div id="mw-head" class="noprint">
 			<?php $this->renderNavigation( 'PERSONAL' ); ?>