Added ability to show all childs and subchilds of selected parent album by new TV option.

I added new option for TV galleryalbumlist that allows you to select all subchilds and childs of parent album.

In album structure:
1
1.1
1.1.1
1.1.2
1.2
2

When you set parent album to 1 with my new option turned off you get albums 1.1 and 1.2 with my option set to on you get 1.1, 1.1.1, 1.1.2 and 1.2