Split dynamic keys out into a more reasonable format with some generalization
to allow for later expansion into things like... keys by window? Sure, why
not. Few changes to make, but it seems to be functioning. I'd like to split
all of the key related stuff into it (like dynamic keys for jumping to
groups, which is still performed in 'config.py'.
Some work towards a command to hide/show bars, but it doesn't work. The bar
needs to be... undrawn? The group moves down as the gap is removed, but the
bar is drawn over it. Perhaps the screen must be redrawn (at least in that
portion), but I'm not yet sure how to trigger that. At least this doesn't
crash anything.
Changed the name of the [Alt]+[b] to use the fledgling togglebars command
properly.