Moments: Add delete button to context menu

[Genygo]

Moments are created at indexing.
Now i added one folder to .ppignore.
The coresponding moments folder is now empty and cant be deleted from the web ui

[lastzero]

You're right, we removed the delete option from the context menu as there is no way to recover deleted moments. In your case, it might make sense to delete it. We'll improve this in one of our next updates.

[lastzero]

Was removed because of Folders disappeared after removing album #738