Sharing albums with easy to remember urls

[haivala]

Enhancement

There is #330, #1423 and #2296 (comment)
about this just by quick search.

I think my suggestion would be the best option to do this as it would be configurable by any user or admin regardless of the sharing permissions or owner of the album. By sharing I mean to make the album public not sharing permissions to other users.

1. Create sharing album
2. Sharing permission would be by default public and the album does not have owner
3. name of the album would be slug to use in the url ie. Event would be /event
4. Any user could "link" their album to this sharing album
5. User can define only the link name and choose one of their albums
6. When album /event/(album_hash) (could be also /event/(link) is accessed the sharing album options on sharing would override the sub album sharing permissions.
7. There would not be any other options for user to do (move, etc) when their the album is accessed in that url.
8. Admin can link any album and user can only link their own albums
9. If there is only one album inside this sharing album the list of the albums could be skipped and the viewer would be redirected straight to that one album.

If pictures would have the sensitive bit I would not show those pics in the sharing album.

Other way to think about this is to think it as an category. User would define category to an album and if there would be many albums in that category they would be displayed in category album Event. But I think it is easier to configure and see the actual results if the steps above are used to make pretty url albums.

These urls would be also future proof. I have problems now with all of the previous album urls (hash and uuid).