Merge branch 'pivot-grid-master' of https://github.com/IgniteUI/igniteui-angular into mkirova/pivot-dropArea-additionalUI

Author: 3phase

projects/igniteui-angular/src/lib/grids/pivot-grid/pivot-grid-navigation.service.ts

@@ -50,4 +50,12 @@ export class IgxPivotGridNavigationService extends IgxGridNavigationService {
             super.handleNavigation(event);
         }
     }
+
+    public focusTbody(event) {
+        if (!this.activeNode || this.activeNode.row === null || this.activeNode.row === undefined) {
+            this.activeNode = this.lastActiveNode;
+        } else {
+            super.focusTbody(event);
+        }
+    }
 }

projects/igniteui-angular/src/lib/grids/pivot-grid/pivot-grid.pipes.ts

@@ -85,6 +85,7 @@ export class IgxPivotRowExpansionPipe implements PipeTransform {
         data.forEach(rec => {
             const keys = Object.keys(rec);
             delete rec.processed;
+            delete rec.sorted;
             //remove all record keys from final data since we don't need them anymore.
             keys.forEach(k => {
                 if (k.indexOf(pivotKeys.records) !== -1) {

projects/igniteui-angular/src/lib/grids/pivot-grid/pivot-util.ts

@@ -47,7 +47,6 @@ export class PivotUtil {
                     rec[k] = this.sort(unsorted, expressions, sorting, pivotKeys);
                 }
             });
-            delete rec.sorted;
         });
         return DataUtil.sort(data, expressions, sorting);
     }