make_itembodyblackboard() now with plain qti12 reverse switch, added res00001, res00003 and imsmanifest generation to exams2blackboard()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/exams@712 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
small fix up for points in exams2blackboard()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/exams@713 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
small fix up for points in exams2blackboard()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/exams@714 edb9625f-4e0d-4859-8d74-9fd3b1da38cb