New preview

git-svn-id: https://svn.code.sf.net/p/rkward/code@4878 7936002b-cd1d-0410-9ce3-d7ebf93b5162
Fix non-copied default values in recode categorical

git-svn-id: https://svn.code.sf.net/p/rkward/code@4879 7936002b-cd1d-0410-9ce3-d7ebf93b5162
rk.power: added skeleton for help file, just needs some text

git-svn-id: https://svn.code.sf.net/p/rkward/code@4880 7936002b-cd1d-0410-9ce3-d7ebf93b5162
rkwarddev: some fixes for automatic scanning of plugin code

git-svn-id: https://svn.code.sf.net/p/rkward/code@4881 7936002b-cd1d-0410-9ce3-d7ebf93b5162
rkwarddev: let's see if we can make writing docs for plugins much simpler in the near future...

git-svn-id: https://svn.code.sf.net/p/rkward/code@4882 7936002b-cd1d-0410-9ce3-d7ebf93b5162