only print traffic if traffic not 0 & var others

modified:   .config/coc/extensions/db.json
	modified:   .config/ncmpcpp/config
	modified:   .config/qutebrowser/quickmarks
       	modified:   .local/bin/bt
	modified:   .local/bin/statusbar/nettraf

.config/coc/extensions/db.json

@@ -1,3 +1,3 @@
 {
-  "lastUpdate": 1594016620119
+  "lastUpdate": 1594097478969
 }