In addition to getting help on specific topics, users can type things
like ":help s" or ":help ^A" to get help on specific key bindings now.
Note that we do not add help texts for these keys here -- we will alias
key bindings to already existing topics in a follow-up patch.
Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>
0d053e2b2b