This simplifies the logic a bit since all of the fg/bg colors are always set when it gets to checking the client state.
This adds the following readline/emacs style shortcuts to the prompt: Ctrl+p, Ctrl+n, Alt+b, Alt+f, Alt+d, Alt+BackSpace. Closes https://github.com/awesomeWM/awesome/pull/282.
Signed-off-b: Julian Wollrath <jwollrath@web.de>