add cache flag for cached preferences

Author: sadakchap

src/lib/ColumnPreferences.js

@@ -94,7 +94,7 @@ export function getOrder(cols, appId, className, defaultPrefs) {
   }
   let filtered = [];
   for (let i = 0; i < order.length; i++) {
-    const { name, visible, required } = order[i];
+    const { name, visible, required, cached } = order[i];
 
     // If "visible" attribute is not defined, sets to true
     // and updates the cached preferences.
@@ -103,6 +103,14 @@ export function getOrder(cols, appId, className, defaultPrefs) {
       order[i].cached = visible;
       updated = true;
     }
+
+    // If "cached" attribute is not defined, set it to visible attr
+    // and updates the cached preferences.
+    if (typeof cached === 'undefined') {
+      order[i].cached = order[i].visible;
+      updated = true;
+    }
+
     // If "required" attribute is not defined, set it to false
     if (typeof required === 'undefined') {
       order[i].required = false;