gistfile1.php

<?php
$galleryManagerConfig
	->removeComponentsByType('GridFieldDataColumns')
	->removeComponentsByType('GridFieldSortableHeader')
	->removeComponentsByType('GridFieldAddExistingAutocompleter')
	->removeComponentsByType('GridFieldPaginator')
	->removeComponentsByType('GridFieldPageCount')
	->addComponents(
		new GridFieldTitleHeader(),
		new GridFieldOrderableRows(),
		new GridFieldBulkImageUpload(),
        new GridFieldEditableColumns(),
	        new GridFieldDeleteAction()
	);
			
$galleryManagerConfig->getComponentByType('GridFieldBulkImageUpload')->setConfig( 'folderName', $this->Folder()->Name );
$galleryManagerConfig->getComponentByType('GridFieldEditableColumns')->setDisplayFields(array(
	'Thumbnail' => function($record, $column, $grid) {
		return new LiteralField($column, $record);
	}, 
	'Title'  => function($record, $column, $grid) {
		return new TextField($column);
	},
	'Caption'  => function($record, $column, $grid) {
		return new TextField($column);
	}
));