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

rack/side/sideWallLeft.scad

@@ -1,25 +1,29 @@
 include <./sideWallBase.scad>
 
-
 *sideWallLeft();
 
 module sideWallLeft() {
 
   applyEpicVentilation()
   applySideWallVerticalRibs()
+  render()
   sideWallBase();
 
   module applyEpicVentilation() {
     apply_n() {
       for (i = [1:8]) {
         translate(v = [0, 35, i * 10 + 8])
-        minkowski() {
-          sphere(r=1);
-          cube(size = [10, 40, 3]);
-        }
+        vent();
       }
       children(0);
     }
+
+    module vent() {
+      minkowski() {
+        sphere(r=1);
+        cube(size = [10, 40, 3]);
+      }
+    }
   }
 
   module applySideWallVerticalRibs() {