Assorted crash fixes

mastodon/src/main/java/org/joinmastodon/android/fragments/BaseStatusListFragment.java

@@ -248,6 +248,7 @@ public abstract class BaseStatusListFragment<T extends DisplayItemsParent> exten
 			@Override
 			public void photoViewerDismissed(){
 				currentPhotoViewer=null;
+				gridHolder.itemView.setHasTransientState(false);
 			}
 
 			@Override
@@ -259,6 +260,7 @@ public abstract class BaseStatusListFragment<T extends DisplayItemsParent> exten
 				return gridHolder.getViewController(index);
 			}
 		});
+		gridHolder.itemView.setHasTransientState(true);
 	}
 
 	@Override

mastodon/src/main/java/org/joinmastodon/android/fragments/NotificationsListFragment.java

@@ -314,6 +314,8 @@ public class NotificationsListFragment extends BaseStatusListFragment<Notificati
 	}
 
 	private void markAsRead(){
+		if(data.isEmpty())
+			return;
 		String id=data.get(0).id;
 		if(ObjectIdComparator.INSTANCE.compare(id, realUnreadMarker)>0){
 			new SaveMarkers(null, id).exec(accountID);

mastodon/src/main/java/org/joinmastodon/android/fragments/settings/SettingsMainFragment.java

@@ -153,7 +153,7 @@ public class SettingsMainFragment extends BaseSettingsFragment<Void>{
 	}
 
 	private void onManageAccountsClick(ListItem<?> item){
-		new AccountSwitcherSheet(getActivity(), null).show();
+		new AccountSwitcherSheet(getActivity(), null).setOnLoggedOutCallback(()->loggedOut=true).show();
 	}
 
 	private void onLogOutClick(ListItem<?> item_){