Could you give an update on the state of this issue? Is https://jira.xwiki.org/browse/CONFLUENCE-51?focusedCommentId=69424&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-69424 still usable? (as it is from 2012).
This message was sent by Atlassian Jira (v9.3.0#930000-sha1:287aeb6)
If image attachments aren't displayed, see this article.