For installation, do the following:
1. in the htdocs folder create an new folder called rsblue.
2. copy all stuff and subfolders of "rightsidebar" into that folder.
3. overwrite screen.css with the file in the zip archive.
4. add rsblue.py in the zip archive to the theme folder in ...site-packages/MoinMoin
5. overwrite PageEditor.py with the version of the zip achive (that
resolves hiding text while editing)
