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I don't think there's a list as such, but you could open up Config\buttons.txt and search for "shortcut".
 
I have a question that is really bothering me. How do I "expand" the game log to cover the screen? I vaguely recall there is some key combination which does this, so you can view more of the log at once.

I'd really prefer not to check history, if possible.
 
There is no such option for the log on the bottom of the screen but you have the same information on last page of the ledger.
Only thing you can do with the log is reducing it in order to use the whole screen for the map. Button is in the top left corner of the log.