(core) set up a trialing list and a call scheduled flag for Grist SaaS

Summary:
This adds support for the automation described in
https://grist.quip.com/rt3tAoEH4kuy/Automate-Sprouts-outreach-email

Test Plan: added tests; will need manual testing and iterative integration work

Reviewers: georgegevoian

Reviewed By: georgegevoian

Differential Revision: https://phab.getgrist.com/D3804

app/client/models/AppModel.ts

@@ -101,6 +101,7 @@ export interface AppModel {
   dismissedWelcomePopups: Observable<DismissedReminder[]>;
 
   pageType: Observable<PageType>;
+  needsOrg: Observable<boolean>;
 
   notifier: Notifier;
   planName: string|null;
@@ -253,6 +254,11 @@ export class AppModelImpl extends Disposable implements AppModel {
   public readonly pageType: Observable<PageType> = Computed.create(this, urlState().state,
     (use, state) => (state.doc ? "doc" : (state.billing ? "billing" : (state.welcome ? "welcome" : "home"))));
 
+  public readonly needsOrg: Observable<boolean> = Computed.create(
+    this, urlState().state, (use, state) => {
+      return !(Boolean(state.welcome) || state.billing === 'scheduled');
+    });
+
   public readonly notifier = this.topAppModel.notifier;
 
   public readonly behavioralPromptsManager: BehavioralPromptsManager =

app/client/ui/AppUI.ts

@@ -53,7 +53,7 @@ export function createAppUI(topAppModel: TopAppModel, appObj: App): IDisposable
 }
 
 function createMainPage(appModel: AppModel, appObj: App) {
-  if (!appModel.currentOrg && appModel.pageType.get() !== 'welcome') {
+  if (!appModel.currentOrg && appModel.needsOrg.get()) {
     const err = appModel.orgError;
     if (err && err.status === 404) {
       return createNotFoundPage(appModel);