Save tour completion, hide welcome widget

src-ui/src/app/components/dashboard/widgets/welcome-widget/welcome-widget.component.html

@@ -1,5 +1,4 @@
-<ngb-alert type="primary" [dismissible]="false">
-  <!-- [dismissible]="isFinished(status)" (closed)="dismiss(status)" -->
+<ngb-alert class="pe-3" type="primary" [dismissible]="true" (closed)="dismiss.emit(true)">
   <h4 class="alert-heading"><ng-container i18n>Paperless-ngx is running!</ng-container> 🎉</h4>
   <p i18n>You're ready to start uploading documents! Explore the various features of this web app on your own, or start a quick tour using the button below.</p>
   <p i18n>More detail on how to use and configure Paperless-ngx is always available in the <a href="https://docs.paperless-ngx.com" target="_blank">documentation</a>.</p>

src-ui/src/app/components/dashboard/widgets/welcome-widget/welcome-widget.component.ts

@@ -1,4 +1,4 @@
-import { Component } from '@angular/core'
+import { Component, EventEmitter, Output } from '@angular/core'
 import { TourService } from 'ngx-ui-tour-ng-bootstrap'
 
 @Component({
@@ -8,4 +8,7 @@ import { TourService } from 'ngx-ui-tour-ng-bootstrap'
 })
 export class WelcomeWidgetComponent {
   constructor(public readonly tourService: TourService) {}
+
+  @Output()
+  dismiss: EventEmitter<boolean> = new EventEmitter()
 }