History of DataTransfer.items

Added Firefox 50 to Compatibility Table. As noted here: https://developer.mozilla.org/en-US/Firefox/Releases/50#DOM_and_HTML_DOM

Replaced {{DataTransferSeeAlso}} macro by general {{page}}

Editorial review completed.

Fixed page formatting to allow the compat data scraper to parse the page

Use DnD specific sidebar and update BC table (DataTransfer.items not supported by FF, Safari nor IE and not on mobiles)

Fix c&p error in example

Use {{DataTransferSeeAlso}}

Fix bug in SeeAlso list

Update title.

New reference for the DataTransfer.items property