description is given (this simplified work for translators).
2) Changed the .track files to use designer instead of description
(if applicable).
3) Updated .pot file
4) Minor clenaup in lisp parser.
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@1850 178a84e3-b1eb-0310-8ba1-8eac791a3b58