name the arguments in the bas-learners for functional variables x, s, time. 
set the indexes of the model fit as default for predictions. 
look at compatibility with mboost 2.3-0

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/fdboost@100 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
delete extra file on stability selection as the functions in mboost 2.3-0 have the necessary functionality 

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/fdboost@101 edb9625f-4e0d-4859-8d74-9fd3b1da38cb