Help/About: Add help tab info for available row actions in the Media Library.

This changeset fills the existing help tab with more detailed information about available row actions in the Media Library, when using the List view.

Props kebbet, audrasjb, costdev, SergeyBiryukov, mukesh27.
Fixes #55800.


git-svn-id: https://develop.svn.wordpress.org/trunk@53586 602fd350-edb4-49c9-b593-d223f7449a82

Author: audrasjb

src/wp-admin/upload.php

@@ -239,7 +239,13 @@
 		'id'      => 'actions-links',
 		'title'   => __( 'Available Actions' ),
 		'content' =>
-				'<p>' . __( 'Hovering over a row reveals action links: Edit, Delete Permanently, and View. Clicking Edit or on the media file&#8217;s name displays a simple screen to edit that individual file&#8217;s metadata. Clicking Delete Permanently will delete the file from the media library (as well as from any posts to which it is currently attached). View will take you to the display page for that file.' ) . '</p>',
+				'<p>' . __( 'Hovering over a row reveals action links that allow you to manage media items. You can perform the following actions:' ) . '</p>' .
+				'<ul>' .
+					'<li>' . __( '<strong>Edit</strong> takes you to simple screen to edit that individual file&#8217;s metadata. You can also reach that screen by clicking on the media file name or thumbnail.' ) . '</li>' .
+					'<li>' . __( '<strong>Delete Permanently</strong> will delete the file from the media library (as well as from any posts to which it is currently attached).' ) . '</li>' .
+					'<li>' . __( '<strong>View</strong> will take you to a public display page for that file.' ) . '</li>' .
+					'<li>' . __( '<strong>Copy URL to clipboard</strong> copies the URL for the media file to your clipboard.' ) . '</li>' .
+				'</ul>',
 	)
 );
 get_current_screen()->add_help_tab(