Fix HTML documentation
These removes even more dummy annotations from the code.

Triggered by @tbeu 's  reported
[feature request for the ttws script](https://github.com/dietmarw/trimtrailingwhitespaces/issues/12)
I ran some tests after implementing those and uses also PlanarMechanics
as "guinnea pig". So why not putting the cleaned up result in a
pull request :-)
Merge pull request #31 from dietmarw/remove-more-dummy-annotations

These removes even more dummy annotations from the code.
Merge pull request #30 from tbeu/patch-html

Fix HTML documentation