Changes to the overview screen (%) - added abilities and made it scrollable.

Also, some more clean-up of tutorial.cc. As this involved a lot of spacing changes it was easier to just replace the file as a whole. Sorry about that. There are still some differences between the Linux and Windows versions that I don't really understand but using get_number_of_cols helps a lot.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@1055 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on March 18, 2007
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