Linked resources

[kirillt]

It might be a cool feature to have links from one resource to another:

1. In Gallery screen, user can press [link] button.
2. Resource Grid screen in "picking" mode should open.
3. In picking mode, user can use same means to query resources.
4. In picking mode, user can "confirm" selection of resources.
5. Confirmed resources become linked to the resource from step 1.
6. Now, in Gallery screen [link] button cycles linked resources.
7. Long tap on [link] button resets links, so the user can link another resources.

Links must be stored in separate storage.