Move wiki page to other project (#5450).

git-svn-id: http://svn.redmine.org/redmine/trunk@13643 e93f8b46-1217-0410-a6f0-8f06a7374b81
Removed duplicate element ids.

git-svn-id: http://svn.redmine.org/redmine/trunk@13644 e93f8b46-1217-0410-a6f0-8f06a7374b81