[#47] Creating an article only gives one button: create.

Also removes some unused javascript.

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You can't directly publish an article anymore, you first have to create
a new one then update it as published.

This is more correct.  *Most* correct would probably be allowing people
to publish & manage the state of an article from the 'show' page, some
other page than the edit form.
[#47] Remove useless articles_controller spec