Limit pushing of filter updates in filter service

Limits the pushing updateFilteredData in the baseFilterList service
to only listen for actual changes of the list input data
This should decrease client stress on autoupdates

client/src/app/core/ui-services/base-filter-list.service.ts

@@ -1,4 +1,5 @@
 import { BehaviorSubject, Observable, Subscription } from 'rxjs';
+import { distinctUntilChanged } from 'rxjs/operators';
 
 import { BaseModel } from 'app/shared/models/base/base-model';
 import { BaseRepository } from '../repositories/base-repository';
@@ -182,7 +183,20 @@ export abstract class BaseFilterListService<V extends BaseViewModel> {
             this.inputDataSubscription.unsubscribe();
             this.inputDataSubscription = null;
         }
-        this.inputDataSubscription = inputData.subscribe(data => {
+        this.inputDataSubscription = inputData
+            /**
+             * Every autoupdate pushes data here.
+             * Not entirely sure why this happens.
+             * However, we are only concerned about changes to our
+             * current moddels, so compare the changes should
+             * limit the updating of filters
+             */
+            .pipe(
+                distinctUntilChanged((curr, prev) => {
+                    return curr.length === prev.length && curr.every((v, i) => v === prev[i]);
+                })
+            )
+            .subscribe(data => {
                 this.inputData = data;
                 this.updateFilteredData();
             });