TODO

* Make sure links are checked case-sensitively except for
  first character in German articles (use canonical name);
  take care of underscore vs. space as well.

* Check weblinks for accessibility.

* Check for {{Gesundheitshinweis}} and {{Rechtshinweis}}.

* Make units configurable.

* Check for formatting of currencies.

* Check for formatting of legal paragraphs.

* Check for formatting of brackets and punctuation marks in
  the same way as their content, i. e. "''(so)''" or
  "'''„A quote.“'''".

* Check for no spaces in front of <ref>s and right
  positioning at the end of sentences or subordinate
  clauses.

* Use FastCGI.

* Move style markup to CSS.

* Establish clear contracts with regard to encoding/escaping
  user input.

* Generate valid HTML.

* Use InterWiki map instead of guessing links.