Correction in refreshing the photo library

When the app is showing an album, and the user switches to another app, he adds or deletes photos in that album and later returns to the app, the photos in the album weren't updated. The number of photos in the album in ELCAlbumPickerController either  weren't updated.

Signed-off-by: Arturo <Arturo@MacBook-Pro-de-Arturo.local>