Abbreviate special keys in Keymap panel

[humdinger]

This is hrev31031.

You need a horizontally very large Keymap window to display all keys untruncated. I'd propose to use abbreviations where possible:

CAPS LOCK -> CAPS NUM LOCK -> NUM CONTROL -> CTRL OPTION -> OPT COMMAND -> COM PAGE ↑ -> PG ↑ PAGE ↓ -> PG ↓

It'd also be a good idea to somehow get rid of the list views to the left. But where to put it...? Below the keymap? Dunno...