Correct some bugs and misprints

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ade4@683 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Add an help file about displays of analyses from 'ade4'

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ade4@684 edb9625f-4e0d-4859-8d74-9fd3b1da38cb