switch all default terminal fonts to dylex; enable xterm utmp
git: change some defaults
gtk: tweak colors to make scrollbars more visible
zsh: make grep -r by default
mkps -e: emc-acceptable characters
xtmux: add crawl font binding
tmux: change bell window alert colors
Revert "zsh: make grep -r by default"

This reverts commit f5b8dc1b94484039d963f7b8a54db6f6a5850b40.