Modify descriptions of artefact-capable items to allow for unquoted

descriptions for artefacts, so as not to drown the actually important information in flavour quotes.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4483 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on April 22, 2008
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