Updating LoginLdap plugin.json & CHANGELOG.md for 3.0.0 release.
Synchronizing translation changes.
Remove donate from plugin.json.
Make sure normal superusers can login when web server auth is used but setup incorrectly.
Add missing item to CHANGELOG.
Add test for web server auth when normal superuser logs in and web server auth isn't used.
Fixes #51, reorganize settings on LDAP settings page.