Add a number of (hopefully useful) mouse-click shortcuts for tiles.

shift-L-click on player: follow stairs (up or down as necessary) shift-R-click on player: show religion screen (if religious) click on stat area: call '5' (100 turn resting)

and add mouse-over information for these commands. Do we need a seperate documentary or is this enough?

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3294 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on January 17, 2008
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