UI: Add * indicator to apparent size/disk usage selection + spacing

Backport of zig/ca1f2933

src/browser.c

@@ -289,10 +289,13 @@ void browse_draw(void) {
   mvhline(winrows-1, 0, ' ', wincols);
   if(t) {
     if(!show_as) attron(A_BOLD);
-    mvaddstr(winrows-1, 0, " Total disk usage: ");
+    mvaddchc(UIC_HD, winrows-1, 0, show_as ? ' ' : '*');
+    addstr("Total disk usage: ");
     if(!show_as) attroff(A_BOLD);
     printsize(UIC_HD, t->parent->size);
     if(show_as) attron(A_BOLD);
+    addstrc(UIC_HD, "  ");
+    addchc(UIC_HD, show_as ? '*' : ' ');
     addstrc(UIC_HD, "Apparent size: ");
     if(show_as) attroff(A_BOLD);
     uic_set(UIC_NUM_HD);