cleaned repository: moved some classed to archive. refined some code and added more javadoc.
made game pause on homebutton
Merge branch 'master' of github.com:ese-unibe-ch/ese2013-team3
Merge branch 'master' of github.com:ese-unibe-ch/ese2013-team3
preparation for merge with nils, not compilable
save game not working properly by id, need to fix this later.