Merge branch 'dev' into thesis

status: fix spaces in sb-cpu
mail [WIP]: fix filtering

.local/bin/statusbar/sb-cpu

@@ -12,7 +12,7 @@ cache=/tmp/cpubarscache
 stats=$(awk '/cpu[0-9]+/ {printf "%d %d %d\n", substr($1,4), ($2 + $3 + $4 + $5), $5 }' /proc/stat)
 [ ! -f $cache ] && echo "$stats" > "$cache"
 old=$(cat "$cache")
-printf " %s " " "
+printf " %s " ""
 echo "$stats" | while read -r row; do
 	id=${row%% *}
 	rest=${row#* }