Fixes a small error in pull request #332 where reblog and favourite notifications show your display name for the "reblogged by/favourited by" message instead of whomever did so.

app/src/main/java/com/keylesspalace/tusky/adapter/NotificationsAdapter.java

@@ -104,7 +104,7 @@ public class NotificationsAdapter extends RecyclerView.Adapter {
                 case FAVOURITE:
                 case REBLOG: {
                     StatusNotificationViewHolder holder = (StatusNotificationViewHolder) viewHolder;
-                    holder.setMessage(type, notification.getStatusViewData().getUserFullName(),
+                    holder.setMessage(type, notification.getAccount().getDisplayName(),
                             notification.getStatusViewData());
                     holder.setupButtons(notificationActionListener, notification.getAccount().id);
                     break;