fix tour placement issues, basic offerTour method

src-ui/src/app/components/dashboard/dashboard.component.html

@@ -19,7 +19,9 @@
   </svg>
 </app-page-header>
 
-<div class='row'>
+<div tourAnchor="tour.dashboard"></div>
+
+<div class="row">
   <div class="col-lg-8">
     <ng-container *ngIf="savedViewService.loading">
       <div class="spinner-border spinner-border-sm me-2" role="status"></div>

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

@@ -1,4 +1,4 @@
-<ngb-alert type="primary" [dismissible]="false" tourAnchor="tour.dashboard">
+<ngb-alert type="primary" [dismissible]="false">
   <!-- [dismissible]="isFinished(status)" (closed)="dismiss(status)" -->
   <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>