Attachments can now be added to wiki pages (original patch by Pavol Murin). Only authorized users can add/delete attachments.
Attached images can be displayed inline, using textile image tag (for wiki pages, issue descriptions and forum messages).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@541 e93f8b46-1217-0410-a6f0-8f06a7374b81