Fix list state navigation (#1765)

* Fix sort direction being lost filtering scenes list

Fix thevsort direction being lost on the scenes (& images & galleries?)
lists when filtering the list by using the "badges" on the tags /
performers / ... popovers.

* Fix using back button not clearing filters to empty

Fix (re)setting of a lists criterion based on the URL in case the new
URL doesn't have criterions / "c" set. When it's unset it should be
assumed the criterions must be empty, instead of maintaining the current
criterions (which could be populated wirh the old criterions when the
list was shown before).

* Set page to 1 on list when applying new filter

ui/v2.5/src/models/list-filter/filter.ts

@@ -79,19 +79,19 @@ export class ListFilterModel {
         }
       }
     }
-    this.sortDirection =
-      params.sortdir === "desc"
-        ? SortDirectionEnum.Desc
-        : SortDirectionEnum.Asc;
+    if (params.sortdir !== undefined) {
+      this.sortDirection =
+        params.sortdir === "desc"
+          ? SortDirectionEnum.Desc
+          : SortDirectionEnum.Asc;
+    }
     if (params.disp !== undefined) {
       this.displayMode = Number.parseInt(params.disp, 10);
     }
     if (params.q) {
       this.searchTerm = params.q.trim();
     }
-    if (params.p) {
-      this.currentPage = Number.parseInt(params.p, 10);
-    }
+    this.currentPage = params.p ? Number.parseInt(params.p, 10) : 1;
     if (params.perPage) this.itemsPerPage = Number.parseInt(params.perPage, 10);
     if (params.z !== undefined) {
       const zoomIndex = Number.parseInt(params.z, 10);
@@ -100,9 +100,8 @@ export class ListFilterModel {
       }
     }
 
+    this.criteria = [];
     if (params.c !== undefined) {
-      this.criteria = [];
-
       let jsonParameters: string[];
       if (params.c instanceof Array) {
         jsonParameters = params.c;