redraw overview from scratch after viewing item.

also contains a bunch of other changes for the quiver

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4190 c06c8d41-db1a-0410-9941-cceddc491573

Created by  pauldubois  on April 11, 2008
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Change contents