Fix page reload navigation and add more debugging

src/app/app.component.ts

@@ -192,6 +192,8 @@ export class AppComponent implements OnInit {
     const id = node.data.id;
     const nodeId = node.data.node_id;
     if ( !node.data.virtual ) {
+      debug('Navigating editor to node:', {id, nodeId});
+
       this.currentPageId = id;
       this.router.navigate(['/editor', { id, ...(nodeId ? { node_id: nodeId } : {}) }]);
     }
@@ -608,6 +610,12 @@ export class AppComponent implements OnInit {
     });
 
     this.navService.navigationRequest$.subscribe(pageId => {
+      debug('Page navigation request: ', {pageId});
+      if ( !pageId ) {
+        debug('Empty page ID. Will not navigate.');
+        return;
+      }
+
       this.currentPageId = pageId;
       this.router.navigate(['/editor', { id: pageId }]);
     });

src/app/pages/editor/editor.page.ts

@@ -43,6 +43,8 @@ export class EditorPage implements OnInit {
     protected modals: ModalController,
     public readonly editorService: EditorService,
   ) {
+    debug('Constructed editor page.');
+
     this.route.params.subscribe(params => {
       this.pageId = params.id;
       debug('Got page ID from route:', this.pageId, params);
@@ -54,6 +56,8 @@ export class EditorPage implements OnInit {
   ngOnInit() {}
 
   ionViewDidEnter() {
+    debug('Ion view did enter editor page.');
+
     if ( this.pageId ) {
       this.editorService.startEditing(this.pageId, this.version);
     } else if ( !this.hosted ) {

src/app/service/navigation.service.ts

@@ -1,5 +1,6 @@
 import { Injectable } from '@angular/core';
 import {BehaviorSubject} from 'rxjs';
+import {debug} from '../utility';
 
 @Injectable({
     providedIn: 'root'
@@ -15,6 +16,9 @@ export class NavigationService {
     }
 
     requestNavigation(pageId: string) {
+        debug('Requesting page navigation:', pageId);
+        debug('Page navigation trace', new Error());
+
         this.navigationRequest$.next(pageId);
     }
 }