Remove old comment
Add new function get_unique_user_id to Shibboleth_authentication_service
Rename pdf_upload.php to upload.php for autoloading the preferences.
Remove standard upload_path in upload.php
Adapt upload to autoloading settings
Move all RoSeLit specific configuration settings to config.php
Fix syntax error
Add installation instructions to README
Add relative paths to api/index.php
Add SQL script for db initialisation
Move loading of config to constructor