3 challenges at the same time.
2) Moved reading of grand prix challenges into unlock manager
(previous location would not read the status of the challenges
correctly from the user config file).
3) Fixed position requirement of 'follow the leader' challenges
(winner has position 2, not 1).
4) GP which have missing tracks are now ignored (solves crash
when STK is installed on top of an old installation)
5) Made the images in the race result screen non-active.
6) Made the description of challenges non-active.
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@2194 178a84e3-b1eb-0310-8ba1-8eac791a3b58
GP name can be used).
2) Added support for challenges to be specified in .challenge files,
converted all existing challenges to be specified in this kind of
data file.
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@2188 178a84e3-b1eb-0310-8ba1-8eac791a3b58
