Move all project files to a django subdirectory

In preparation of rewriting the site using webpy.
Initial commit of webpy code / templates
Add rot13 tool
Output version of babab.nl, python and webpy
Add string generator tool
Add seperate run scripts (devel and production)
Rename tpl/*.tpl -> tpl/*.html
Add license (headers) and update readme
Remove all files related to old django project
Bump version 6.0.0