Merge new setup wizard
This is much more up-to-date than the previous setup page, with a new
design and previously missing/new settings. Currently only available in
english (hopefully that changes soon).
also fixes conflict in _post.
Also make store each setting as classes in a settings object, to make it
easier to serialize on submitting. Also, added
"substitute_jellyfin_strings", "no_username" and welcome_email.
Rewritten with a17t. Content right now is just a copy of the original
setup.html, but settings for new features will be added later.Currently
all cards are shown, only the current one will show in future.
the web ui has been redesigned with the a17t toolkit, which imo looks a
lot better than bootstrap. This also brought a complete rework of the
web code, which now makes a lot more sense hopefully. the setup page is
still stuck with bootstrap, its not much of a priority but i'll rewrite
it eventually.