introduce slack config fale. also small edits to side wall stuff

rack/side/sideWallRight.scad

@@ -7,23 +7,26 @@ module sideWallRight() {
   applyEpicVentilation()
   mirror(v=[1,0,0])
   applySideWallVerticalRibs()
+  render()
   sideWallBase();
 
   module applyEpicVentilation() {
 
     apply_n() {
-
       for (i = [1:8]) {
-        translate(v = [-10, 35, i * 10 + 8])
-        minkowski() {
-          sphere(r=1);
-          cube(size = [10, 40, 3]);
-        }
+        translate(v = [-10, 35, i*10+8])
+        vent();
       }
-
       children(0);
     }
 
+    module vent() {
+      minkowski() {
+        sphere(r=1);
+        cube(size = [10, 40, 3]);
+      }
+    }
+
   }
 
   module applySideWallVerticalRibs() {