Import the SQL structure during the install.

This is to remove a step in the install. And also to facilitate install
in a docker container :)
remove reference to old admin folder for config.php
fix typo (thanks Ewa)
Merge branch 'master' of https://github.com/SuyoungWang/elabftw into next
fix swift path
the inc/functions is not available here, so default to english.
fix up lang in register pages
update the langs and fix download name
fix new team getting no default template
add credits for zh-CN \o/