UI updates (#922)

* Fixed download spinner in player component

* Downloads UI is more mobile friendly (#905)

* Code cleanup

* Fixed size of actions in home screen downloads

* Errored downloads now display their stage as "Error" in the UI

* Moved personal settings from about dialog to profile dialog

* Profile dialog can now be opened without logging in/without multi-user mode

* Fixed issue where archive dialog could be accessed from anywhere

* Misc internationalization improvements

* Combined download stage and download progress columns

* Added back loading spinner to download actions

* Adjusted thresholds for consolidating download action buttons

* Implemented virtual scrolling for notifications (helps if many notifications exist)

* Fixed minor console error

src/app/app.module.ts

@@ -34,6 +34,7 @@ import { MatBadgeModule } from '@angular/material/badge';
 import { DragDropModule } from '@angular/cdk/drag-drop';
 import { ClipboardModule } from '@angular/cdk/clipboard';
 import { TextFieldModule } from '@angular/cdk/text-field';
+import { ScrollingModule } from '@angular/cdk/scrolling';
 import { FormsModule, ReactiveFormsModule } from '@angular/forms';
 import { AppComponent } from './app.component';
 import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';
@@ -189,6 +190,7 @@ registerLocaleData(es, 'es');
         DragDropModule,
         ClipboardModule,
         TextFieldModule,
+        ScrollingModule,
         NgxFileDropModule,
         AvatarModule,
         ContentLoaderModule,