Hide albums / items from the public.
Adds option to hide albums or items in General tab of edit item.
An anonymous user can visit the direct URL to view the album or item.
After an anonymous user visits the album once, it is "unhidden" for them. This means that they can visit the URL directly, then go up one level and see the album they just visited.
Unlike Gallery1's hidden feature, with Gallery2 the anonymous user must visit the hidden album URL directly before they are able to view any items within it.
For example, the anonymous user would visit:
Then the visitor can view the contents of that album, or follow direct links. e.g. by visiting links like: