testthat fixes, etc.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dirichletreg@22 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
"project home page" updated.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dirichletreg@23 edb9625f-4e0d-4859-8d74-9fd3b1da38cb