ENHANCEMENT: Add GridfieldLevelup component to files area

code/controllers/AssetAdmin.php

@@ -146,7 +146,8 @@ JS
 			new GridFieldPaginator(15),
 			new GridFieldEditButton(),
 			new GridFieldDeleteAction(),
-			new GridFieldDetailForm()
+			new GridFieldDetailForm(),
+			GridFieldLevelup::create($folder->ID)->setLinkSpec('admin/assets/show/%d')
 		);
 
 		$gridField = new GridField('File', $title, $this->getList(), $gridFieldConfig);

code/controllers/CMSMain.php

@@ -669,14 +669,16 @@ class CMSMain extends LeftAndMain implements CurrentPageIdentifier, PermissionPr
 	public function ListViewForm() {
 		$params = $this->request->requestVar('q');
 		$list = $this->getList($params, $parentID = $this->request->requestVar('ParentID'));
-		$gridFieldConfig = GridFieldConfig::create()->addComponents(
+		$gridFieldConfig = GridFieldConfig::create()->addComponents(			
 			new GridFieldSortableHeader(),
 			new GridFieldDataColumns(),
 			new GridFieldPaginator(15)
 		);
 		if($parentID){
 			$gridFieldConfig->addComponent(
-				new GridFieldLevelup($parentID)
+				GridFieldLevelup::create($parentID)
+					->setLinkSpec('?ParentID=%d&view=list')
+					->setAttributes(array('data-pjax' => 'ListViewForm,Breadcrumbs'))
 			);
 		}
 		$gridField = new GridField('Page','Pages', $list, $gridFieldConfig);