Move around a couple of spell tiles, reorder spells in the tiles code,

and document the missing tiles. Also add a tile for small skeletons, and update the change log.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@10653 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on September 11, 2009
6WTIPODXGUFWCOP5ADMR2XCCQ63HMZR7LHZM2FX4L2ACZWLKTQQAC
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