Hide default deck by default

[sorata]

This was originally brought up here:

Default deck is hidden and name is taken

Then hide it from the very beginning (and give it an internal name, like “__internal__”) Whatever the reason is: It is poor UX (since several people got baffled by this bug) It should be easily fixed (I have been a lead web dev for like 18 years), e.g. hide it from the start and display a big “create deck” button Anki seems to strongly excel in LTM training (I’m no expert in the domain, but it seems to be universally praised for that), and I’m aware that volunteers a…