bin/colorterm: show short escape sequences for the 16 first colors

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
bin: remove script extensions and rename colorterm to colortable

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
.sheel/prompt: change root prompt style

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
bin/iptables-stats: improve script output by not displaying chains with unmatched rules

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
bin/iptables-stats: add options to choose what to display

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>