Revert "Add scratchpad functionality"

This reverts commit 503b1f44082b029cf4e5a3ee2f7b8d01ac6bcdf4.
Revert "applied improved version of Martti Kühne's dmenu/multi monitor approach from dwm, no dmenuspawn required"

This won't work until the dmenu package on Arch is updated.

This reverts commit 6af273771cb0e28e4394c78ab0322f77025a57f3.

Conflicts:
	config.def.h