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/components/notifications/notifications.component.ts

@@ -14,6 +14,7 @@ export class NotificationsComponent implements OnInit {
 
   notifications: Notification[] = null;
   filtered_notifications: Notification[] = null;
+  list_height = '65vh';
 
   @Output() notificationCount = new EventEmitter<number>();
 
@@ -110,6 +111,8 @@ export class NotificationsComponent implements OnInit {
 
   filterNotifications(): void {
     this.filtered_notifications = this.notifications.filter(notification => this.selectedFilters.length === 0 || this.selectedFilters.includes(notification.type));
+    // We need to do this to get the virtual scroll component to have an appropriate height
+    this.calculateListHeight();
   }
 
   selectedFiltersChanged(event: MatChipListboxChange): void {
@@ -117,6 +120,12 @@ export class NotificationsComponent implements OnInit {
     this.filterNotifications();
   }
 
+  calculateListHeight() {
+    const avgHeight = 166;
+    const calcHeight = this.filtered_notifications.length * avgHeight;
+    this.list_height = calcHeight > window.innerHeight*0.65 ? '65vh' : `${calcHeight}px`;
+  }
+
   originalOrder = (): number => {
     return 0;
   }