move tests brownian bridge to testthat

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/move@465 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Check for error with projections for bridge calculations

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/move@466 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
speed up dynBGB example

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/move@467 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fix documentation

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/move@468 edb9625f-4e0d-4859-8d74-9fd3b1da38cb