Fix database lookup for features, and add fountain of blood, as well as p

otion of coagulated blood to items.

Also copy the more interesting branch stair descriptions into branches.txt. Most of them still have the generic "Describe branch here", and I lack the imagination to change that. Ideally, the branch entries should get distinct descriptions closer to describing the atmosphere, e.g. "Putrid smell fills your nostrils." (Tomb), "A moss-covered staircase. From below you can hear squeaking noises, and odd deep croaks." (Lair), or "The sound of clanging weapons reaches your ears." (Blades), with the branch descriptions pulled up after that when describing the staircases in-game. (Or maybe vice versa.) Hmm, did I say I was lacking imagination? :p

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3897 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on March 27, 2008
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