noborder parameter

- Add noborder parameter to enable/disable border when only one window is shown

dwm.c

@@ -1498,7 +1498,7 @@ resizeclient(Client *c, int x, int y, int w, int h)
 	wc.border_width = c->bw;
 	if (((nexttiled(c->mon->clients) == c && !nexttiled(c->next))
 	    || &monocle == c->mon->lt[c->mon->sellt]->arrange)
-	    && !c->isfullscreen && !c->isfloating
+	    && !c->isfullscreen && !c->isfloating && noborder
 	    && NULL != c->mon->lt[c->mon->sellt]->arrange) {
 		c->w = wc.width += c->bw * 2;
 		c->h = wc.height += c->bw * 2;