How to open PDF attachments from the wiki directly in the browser? (XWiki.org)

History of How to open PDF attachments from the wiki directly in the browser? — revisions from 1.1 to 5.1
From	To	Version	Editor	Date	Summary
From	To	5.1	Ecaterina Moraru (Valica)	2017/09/04
From	To	4.1	Iulia Balan	2016/06/07	Changed creator, author or contentAuthor document fields to xwiki:XWiki.IuliaBalan
From	To	3.6	Eduard Moraru	2016/06/07
From	To	2.2	Eduard Moraru	2016/06/07
From	To	1.1	Eduard Moraru	2016/06/07