added CDEC snow course metadata

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/aqp@851 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fixing some CRAN-related issues

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/aqp@852 edb9625f-4e0d-4859-8d74-9fd3b1da38cb