Merge #666

666: Add long press to add card to group r=TheLastProject a=Altonss

Fixed issue #649.

Co-authored-by: Altonss <66519591+Altonss@users.noreply.github.com>

app/src/main/java/protect/card_locker/ManageGroupActivity.java

@@ -205,7 +205,7 @@ public class ManageGroupActivity extends CatimaAppCompatActivity implements Mana
 
     @Override
     public void onRowLongClicked(int inputPosition) {
-        // do nothing for now
+        mAdapter.toggleSelection(inputPosition);
     }
 
     @Override