Merged in feature/HIMA-59-create-animation-filter-dropdown (pull request #45)

[HIMA-59] - updated change detection for filters

src/app/core/store/state/filter.state.ts

@@ -31,7 +31,9 @@ export class FilterState {
 
   @Selector()
   static getFiltersJSON(state: FilterStateModel) {
-    return JSON.stringify(state.filters);
+    return JSON.stringify(
+      state.filters.reduce((prev, curr) => [...curr.items, ...prev], [])
+    );
   }
 
   @Selector()