Slightly improved setup page, a couple bug fixes.
Changelog
a5a721b Fix broken theme button after changing bootstrap version
1c980cf Use bs5-jf on setup, fix bugs
072776c add public_server input to setup
d12335b cleaned up auth
c6f8452 fix alignment on setup page, change invite generator column widths
086fd0e fix display of blank emails and naming of fields
0e39b2b remove debug fmt.Printlns
6e3d5da use newJellyfin instead of constructor method